I can't attest to the accuracy of this translation, and it only applies to part of the clip, but here goes....
Haggar: I'll tell you the truth; your mother was not of the Galran race!
Lotor: My mother!? You!
Haggar: King Zarkon raped an Althian woman, which resulted in the birth of a half-breed spawn.
Lotor: YOU'RE LYING! TELL ME THE TRUTH!
Haggar: I'm not lying! You're mother was Althian! You could never become the true ruler of the Galra Empire!
Lotor: Shut up! SHUT UP!!!
Haggar: Lotor, what will you do now?
Lotor: How DARE you insult me you bitch! DIE!!!
*Lotor kills Haggar*