Aye, as Ben said, cover is very important - probably the most important factor. In addition, standing stone choices are important, especially at lower levels too. The lord stone gives a 25% Magic Resistance (and some extra armor). The atronach stone gives a 50% magic absorption. Either of these stones will help (somewhat) against mages and dragons. Carry potions of resist 'element' - at least one of each type. After you see what element the enemy is using, drink the appropriate potion. And, if role-play allows, complete the 'Agent of Mara' quest - an additional 15% magic resist will help too.
Aye, as Ben said, cover is very important - probably the most important factor. In addition, standing stone choices are important, especially at lower levels too. The lord stone gives a 25% Magic Resistance (and some extra armor). The atronach stone gives a 50% magic absorption. Either of these stones will help (somewhat) against mages and dragons. Carry potions of resist 'element' - at least one of each type. After you see what element the enemy is using, drink the appropriate potion. And, if role-play allows, complete the 'Agent of Mara' quest - an additional 15% magic resist will help too.