[ Provoked? Castiel had just molotov'd Michael. Complete overreaction. ]

As long as Lucifer doesn't hurt anyone I care about, I won't go after him, and I will keep an eye on Meg for you.

[ He's relieved that Gabriel backed down. There are a lot of siblings that he would easily chose Meg over, but Gabriel isn't one of them. He can't forget what Gabriel has done for them. ]