Divine Protection (World of Warcraft). A spell that a Paladin can cast on him/herself once every 5 minutes that makes them immune to all damage and removes all effects, and it last 10 seconds.
Generally referred to as a "bubble", or "to bubble"
Sometimes used in battlegrounds to secure the flag in Warsong Gulch or to "Bubble-hearth", a (usually seen as very cowardly) to their Hearthstone location out of fights, raids or groups.
"I had to chase Wanda all the way to the flag room because she DP'ed."
"I was almost slaughtered by a gang of Murlocs, but I DP'ed and ran."