I am looking for a specific destiel fic. I read it but for some crazy reason didn't bookmark it. I've gone through hundreds of my bookmarks with no luck. Can anyone tell me what this one is called?

Dean has always been an angel--Michael, I believe, but I have also read a few convincing Lucifer!Dean fics and this possibly could have been one of them. Cas finds out and traps him in a circle of holy fire. I recall a scene where Raphael comes to talk to the trapped Dean and says that he was actually trying to heal Castiel but was out of practice so he overpowered it and exploded him.