I have a few:
"Stupid machina! Cancelling it's own magic!" -Wakka
Here's a funny little dialogue:
Yuna: Will you go on, sir Auron?
Auron: Well, I am the troublemaker, after all.
Tidus: Yeah! You can always count on Auron to complicate things.
Rikku: That's right! Kimahri roars, and Auron runs off, and
Auron: I never asked you to follow me.
Here's another one:
Tidus: That grump [Auron] never tells me anything
Yuna: [laughs, then imitates Auron's voice] That's none of your business.
The funny thing is that Auron is just behind them! I guess out of sight, out of mind works in this game.
There are more, but I forgot them.