It's some kind of an aura, I know, I know I should know as long as I have played but I don't because I have never seen one before. Notice the kind of goldish smoke in the middle of it. It just appeared around me all of a sudden and I thought someone had casted it on me but there was no one around. I thought it might be some kind a protection thing but I still got hit just as hard. Then I thought it might be a skill increase thing but nothing showed up above my name showing how much for how long as they usually do. And it didn't help my loot lol.
So if you know I would like to know also.
TIA for the info.