- Spacemen, you must die!
- Did you say something?
- He says we must die.
- Well, if you insist. But come here.

11 seconds sound clip from the Robot Monster (1953) movie soundboard.

You can hear this line at 00:09:32.201 in the Blu-ray version of the movie.

Quote context

[...]

- And, well, I guess now we're gonna kind of get on with the show.

- I want to say that I certainly hope to see you real soon in this very same theatre. So, God bless you. We'll see you. Now, on with the show.

(bells)

- Am I dead?

- You're disintegrated.

- Good. Does that mean we can play house now? You promised.

- These woods are full of spacemen. It's either them or us. Come on.

- Spacemen, you must die!

- Did you say something?

- He says we must die.

- Well, if you insist. But come here.

- Wouldn't it be nicer if we could live at peace with each other?

- Okay, I'll be from a friendly planet.

- Good. Does that mean we can play house now?

- No.

- I'm friendly, but I still have to find out what they're doing here.

[...]