How is “turn against” used?

In Cleopatra (1963), one line is: “Once your friend. You trusted him, and he turned against you.”

Which movie is “turn against” from?

The clip at the top of this page is from Cleopatra (1963).

Once your friend. You trusted him, and he turned against you.

8 作品で登場 · 1 本目

to stop or make sb stop being friendly towards sb

6 本の映画に登場

オックスフォード映画の 100%
to stop or make sb stop being friendly towards sb
You turn against Videodrome.

定義：Oxford Advanced Learner's Dictionary 第 9 版