Ooh! This looks fun!
I could think of a few non- specific ones...
"As you slip away into darkness... remember my face. It will be the last thing you ever see..."
"Oh, you wanted to live? Why are you in a tournament, then?"
"Aye, you fought well. And it will be such a shame to have it all go to waste..."
"Well, this got boring... Lunch, anyone?"
"The effects of a battle can twist and torment one's soul... good thing I don't have one..."