He says for Brutus' sake, he finds himself beholding to us all.
6 seconds sound clip from the Julius Caesar (1953) movie soundboard.
You can hear this line at 01:11:38 in the DVD version of the movie.
Quote context
[...]
- Stay, ho! Let us hear Mark Antony!
- Let him go up into the public chair. We'll hear him.
- For Brutus' sake, I am beholden to you.
- He says for Brutus' sake, he finds himself beholding to us all.
- It were best he speak no harm of Brutus here!
- Nay, that's certain. We are blessed that Rome is rid of him!
- You gentle Romans. Gentle Romans, hear me!
[...]