Justice League2001

[Flash taps into the Speed Force to defeat Luthor, then rises, crackling with energy]

The Flash:
I feel kinda... funny.

[He disappears]

Wonder Woman:
Flash!

[the League stares in horror, and Luthor chuckles weakly]

Lex Luthor:
What do you know? I did kill him.

[He looks up and sees Superman]

Lex Luthor:
I was mistaken earlier. I think this is the part where you kill me.

[Superman picks him with one arm and holds him at arm's length with eyes glowing. Wonder Woman starts forward, but Batman holds her back. After a moment Superman's eyes stop glowing, and he leans his face close to Luthor's]

Superman:
I'm not the man who killed President Luthor. Right now, I wish to heaven that I were. But I'm not.