It's the mission that when you turn lvl 15 you go into a drinking contest with a guy named sam and so like you end up in a temple and you have to do these random little quests so like and im stuck at the part in the duengon where before you enter the realm where sam is a deadric lord. What i need help on is how are you supposed to kill the guy shooting Firebolts i end up dying with one hit. Even though im wearing dragon armor.

Armor doesn't do anything to magic. You'll either need to enchant things with magic/fire resistance, or be sneaky and kill him with stealth.

Also, how can you possibly killed in one hit by that spell? Have you put nothing into health?

Its possible to run past them and just jump into the portal. I got stuck with an Electromancer, and all those lightning bolts sapped my health and magick. Didnt have any good shock resist gear with me.

That's a pretty tough encounter actually. Not sure what your skills are, but focus fire on each opponent. Don't swing around wildly. It's never good to have multiple mages on you.. so you want to take each out as fast as possible. Chug some health potions if you have them, of course. I'd say do this until you cut through two or three of them, then use Unrelenting Force on the rest.Probably best to do that against the boss (at least I think he's a boss).. the electro mage. Once you knock him back, you can cut through him easily.

thxs for all the help i ended up taking them out one at a time then for the last guy (pyromancer) i used Call of Valor i also had a hired merc. and i turned myself into a werewolf.