And many Scottish nobles, who would not be slaves, were lured by him, under a flag of truce, to a barn where he had them hanged.

10 seconds sound clip from the Braveheart (1995) movie soundboard.

You can hear this line at 01:49:24 in the Blu-ray version of the movie.

Quote context

[...]

- He proposes that you withdraw your attack. In return, he grants you title, estates, and this chest of gold, which I am to pay to you personally.

- A lordship and titles. Gold. That I should become Judas?

- Peace is made in such ways.

- Slaves are made in such ways!

- The last time Longshanks spoke of peace, I was a boy.

- And many Scottish nobles, who would not be slaves, were lured by him, under a flag of truce, to a barn where he had them hanged.

- I was very young, but I remember Longshanks' notion of peace.

- I understand you have suffered. I know about your woman.

- She was my wife. We married in secret because I would not share her with an English lord.

- They killed her to get to me.

[...]