You Have Forgotten Your Place, Lord Vader! By Taking This Boy As Your Apprentice, You Have Betrayed Me! (Star Wars)

[The Rogue Shadow flies to the Executor. Starkiller stands by Darth Vader's side.]

Darth Vader: The Emperor's fleet has arrived.

Starkiller: You have lured the Emperor to us... When do we strike?

Darth Vader: I did not summon him.

[The door opens and the Emperor appears. Starkiller turns and is suddenly impaled from behind by Vader's Lightsaber.]

Darth Vader: His spies followed you here.

[He falls as the Emperor approaches.]

Darth Vader: What is thy bidding, my master?

The Emperor: You have forgotten your place, Lord Vader. By taking this boy as your apprentice, you have betrayed me.