From “Empok Nor” (5x11)

Another still of Garak taunting the humans. This is him delivering parting shots at O’Brien before announcing he’s off to go hunt Third Battalion soldiers on his own.

O’Brien: Let him go. If he thinks he can neutralize the Cardassians, let him try. He’ll be doing us all a favor.

Garak: That’s the spirit. Why don’t you come with me, Chief? Kill a few Cardies. It’d be like old times. Wouldn’t you like to avenge their deaths?

O’Brien: No. I just want to get everyone home.

Garak: You’re fighting your instincts, I can see it. But the hero of Setlik III is still inside there somewhere.

He sure knows how to push those buttons. That is a skill of his! And certainly would be brought out by a drug like that.