He meant that he "killed" that part of him. Anakin as in the jedi, the compassionate, good person he was is nowhere to be found after he turned to the dark side.
Obi-Wan spared Anakin despite knowing killing him would "burn his heart to ash" and feeling regret for what Anakin could have become. Obi-Wan's decision to spare Anakin was influenced by the dark feeling that accompanied Emperor Palpatine's arrival, preventing him from finishing him off.
Darth Vader: I am not your failure, Obi-Wan. You didn't kill Anakin Skywalker. I did. ————————————————— Even in the depths of his hatred, Anakin gives his old mentor one last mercy, absolving him of his guilt.
It is likely he did the same for the 501st with special instructions that Anakin/Vader is exempt as he is no longer a Jedi. This. It's likely he had the 501st on standby on Coruscant, and before he sent Anakin over, he instructed them to not kill him.
How Darth Vader Said He KILLED Anakin In the Jedi Temple - Star Wars Explained
Did Anakin regret killing Younglings?
And he's already murdered Mace Windu at Palpatine's behest, more or less by stabbing the Jedi in the back. The canonical comic Star Wars: Darth Vader #7 confirms the younglings' deaths caused Anakin grief, self-loathing, hatred, and pain, fueling his descent even further into the Dark Side.
During the battle, Anakin, who had been known as the Sith Lord Darth Vader, was redeemed by Luke and brought balance to the Force. However, the redemption cost Anakin his life, having been mortally wounded by the Emperor, Darth Sidious, while killing his former Master.
Originally Answered: What were Anakin Skywalker's last words? In Return of the Jedi his lasts words were, “ You already have Luke. You were right. You were right about me.
On a practical level, Obi-Wan did not know that Anakin had survived simply because he was isolated on Tatooine. Although Obi-Wan did not see Anakin die after their battle on Mustafar in Star Wars: Revenge of the Sith, he reasonably could have assumed that Anakin would die from his injuries.
Anakin Skywalker ultimately ended up hating Obi-Wan Kenobi for many misguided reasons, but Darth Vader's subconscious response to the Jedi's final declaration of love in the Star Wars prequels shows the real reason he could never forgive him.
He couldn't bring himself to kill Darth Vader, however, because he continues to associate him with the Anakin he trained as a boy. This is also the exact reason why Obi-Wan didn't kill Anakin on Mustafar despite the opportunity a decade earlier in Star Wars: Episode III - Revenge of the Sith.
Instead, the theory suggests that Padmé died because Palpatine killed her. By taking a closer look at how Anakin's transformation into Darth Vader is intercut with Padmé's death, a clearer picture emerges of how Padmé's death was more likely a planned-out murder as opposed to an accidental tragedy.
Behind his mask, he squeezed his eyes shut in an effort to hold back the tears that he was physically unable to wipe away. But no tears came. He didn't know whether the surgical droids had altered or removed his tear ducts, and he was beyond caring.
Some Jedi, including Jedi Master Obi-Wan Kenobi on Utapau, Master Luminara Unduli and Grand Master Yoda on Kashyyyk, Padawan Caleb Dume on Kaller, Padawan Cal Kestis over Bracca, former Padawan Ahsoka Tano aboard the Tribunal, and Grogu on Coruscant, managed to escape.
There's no doubt that Anakin was among the most powerful Jedi in Star Wars, but Obi-Wan was wary of his padawan's obsession with victory. Obi-Wan didn't have the same control over Anakin as a Jedi knight is supposed to have on his padawan and was routinely caught in Anakin's daredevil antics.
In Episode 2 of Obi-Wan Kenobi, their plan works, and he leaves Tatooine for Daiyu. It's here, when confronting Reva, he learns that Anakin didn't die on Mustafar. Reva knows Darth Vader's true identity, and she uses this fact to taunt the distraught Obi-Wan.
As to when Obi-wan learned Anakin/Vader SURVIVED their Mustafar duel: In canon Reva, the third sister and imperial inquisitor, tells him that Vader/Anakin lives. That's 10 years after the end of the clone wars when he's trying to rescue Leia.
He would have been in his 30s for most of Rebels. He was in his 40s during the original trilogy, 41 standard in 3277 (Rogue One, ANH), and 45 when he died in 3281.
Anakin Skywalker: Don't lecture me, Obi-Wan! I see through the lies of the Jedi. I do not fear the dark side as you do. I have brought peace, freedom, justice, and security to my new Empire!
A dark side user's eyes would sometimes change color and burn yellow with a fiery red rim when rage and anger seethed inside them. Anakin Skywalker's eyes changed color in this way as he massacred the Executive Separatist Council on the planet Mustafar in 19 BBY, radiating anger and hate.
A year later, in 4 ABY, with his health rapidly declining, Yoda died of old age when Skywalker returned to see him. He became one with the Force, shortly before Luke redeemed his father Anakin, who fulfilled his destiny as the Chosen One by killing Sidious.
Their battle was interrupted when Leia used the last of her strength to reach her son in the Force. While Kylo was distracted, Rey ran him through with his own lightsaber, leaving him mortally wounded.
Darth Vader's final words were “if you will not turn to the dark side, then perhaps she will”. Anakin Skywalker's final words were: “You were right. You were right about me. Tell your sister…you were right”.
