I guess this whole thing is my fault. If I hadn't shot you, none of this would have happened.

6 seconds sound clip from the El Dorado (1966) movie soundboard.

You can hear this line at 01:51:54 in the Blu-ray version of the movie.

Quote context

[...]

- Well, what're you gonna do now?

- Well, they've got McLeod and a bunch of gun hands, and they've got your brother.

- You just take a look around here. We've got two cripples, a green kid and a noisy old... indian fighter.

- Now, how in the hell do I know what I'm going to do?

- You go back and tell your pa we're gonna do whatever we can, but that it's up to him whether he gives up or not.

- I guess this whole thing is my fault. If I hadn't shot you, none of this would have happened.

- You will try, though?

- Yes, ma'am. We'll try.

- I reckon we'll be going.

- Well, Sheriff, just what are we gonna do?

- I don't know, Bull. Like I told the lady, I just don't know.

[...]