I read a fic (and I can't remember the author or title) where Cas was in hell being tortured by Lucifer and the floor was really hot and burnt his feet. I can't remember much but I'm pretty sure that eventually he got out and the boys looked after him. I have a feeling that it was Destiel.

If anyone knows which fic this is please help me out!
Thank you
:)

Edit
FOUND: http://thevinegarworks.livejournal.com/23181.html#cutid1