And if Achilles dies, we retire to consider a certain plan of mine.

4 seconds sound clip from the Helen of Troy (1956) movie soundboard.

You can hear this line at 01:32:31.066 in the Blu-ray version of the movie.

Quote context

[...]

- I intend to live, Andromache, for you and for our son.

- This helmet always frightens him. Let's pray that he may never need one, that he finds peace.

(Spartan horn blowing)

- If Achilles wins, we move.

- We strike at once! To the palace!

- And if Achilles dies, we retire to consider a certain plan of mine.

- There's an immortal shield around him.

- Mighty Zeus, help me find a weakness.

- Achilles is dead!

- So dies Greek courage, but not Greek cunning.

- Defeated by men, deserted by the gods.

- I used to number the months by a battle, a pestilence, a famine. Now it's all one long nightmare.

[...]