We're supposed to be on guard.

4 seconds sound clip from the Spiritual Kung Fu (1978) movie soundboard.

You can hear this line at 00:23:02 in the DVD version of the movie.

Quote context

[...]

- Do you know?

- Ask him.

- Right

- What's wrong? Headache?

- Didn't have. Till you came.

- We're supposed to be on guard.

- I know. Go away.

- Hey, what you're doing?

- We're on guard.

- Don't go up there. There's ghosts!

[...]