Code Geass: Lelouch of the Rebellion: Season 1, Episode 18

1 - 18: Stage 18 - I Order you, Suzaku Kururugi

Suzaku is appointed to be the princess' royal knight, leaving Lelouch to struggle with the decision of what to do about him. He wants Suzaku on his side, but will using the Geass on another loved one be the choice he has to make?