Get up there on that rock. If you see anybody coming, fire a shot in the air. That will give us a little warning.
6 seconds sound clip from the El Dorado (1966) movie soundboard.
You can hear this line at 00:09:30 in the Blu-ray version of the movie.
Quote context
[...]
- Doc wanted you to know. Said tell you to be careful.
- Thanks, Roy. Tell Doc I'm much obliged to both of you.
- Matt, you and Saul stay with me. We'll take these horses back to the ranch.
- Joey, get out to the west part and tell Jared to get back to the ranch as soon as he can.
- Wait a minute! I ain't finished yet!
- As soon as you fire that shot, you jump on your horse and hightail it, you hear?
- Mr Jason, you got a visitor.
[...]