It won't work, Sarah. You're no killer. I don't believe you can do it.
5 seconds sound clip from the Terminator 2: Judgment Day movie soundboard.
You can hear this line at 01:00:27 in the Blu-ray version of the movie.
Quote context
[...]
- Open it, or he'll be dead before he hits the floor.
- There's no way, Connor. Let him go.
- It won't work, Sarah. You're no killer. I don't believe you can do it.
- You're already dead. Everybody dies. You know I believe it. So don't fuck with me!
- Open the door. Open the door.
- Back off! Get back! I'll pump him full of this shit. I swear!
[...]