Fire Shield is a spell in The Elder Scrolls IV: Oblivion that combines the effects Resist Fire and Shield. Its magnitude is considered armor against both physical damage and elemental fire. It protects the user from fire Destruction spells, such as Fire Ball, Flare, and Fire Storm. It comes in both potion and scroll forms.
Effectiveness and degree of protection (expressed as a percentage) vary, and the higher quality fire shield potions cost up to a few hundred Septims. They can be found in most Alchemy shops and are also scattered around Cyrodiil's wilderness as random loot.