Yes. But you are invincible until you are done. Afterwards you are toast and it probably wont matter since they are probably 15+ levels over you and they have the first few hits.
Such is the way of life on a PvP server.
I don't mind fighting if the outcome is based upon player skill but that's just pathetic. They should grow a pair. It's happened to me four times in the last two days and it's starting to get on my ****.