You save your breath because you'll need it to talk to the devil.
6 seconds sound clip from the The Avenging Eagle movie soundboard.
You can hear this line at 00:51:51 in the Blu-ray version of the movie.
Quote context
[...]
- So then, Yoh Xi Hung swore that he'd wipe out his whole family.
- Damn you. You kill my family, I tell you, you shall rot in hell for this. You muttering bastard!
- Well, you're not gonna kill me, that's for sure.
- You save your breath because you'll need it to talk to the devil.
- She's Se Ma Sun's daughter-in-law. She's married to his eldest son Cheuk Yi Fan.
- I'm gonna let you finish her off.
- I'm not begging for my own life. Just let my child be born, then I don't mind dying.
- That's great. So you've found us in here, now to be killed?
[...]