What episode is this from?

[IamtheKnight]

"I do what I have to protect this family."_ Leonardo. I don't remember what episode it's from, so if any of you knows where this is from I would gladly accept it. I just realized that I put this in the wrong section. So can a mod please move this?
Please I really need to know what episode it's from!

[Buffy]

I think it was from the episode "bad day".