Resist Water Damage for D seconds
This effect allows you to swim through lava in Oblivion planes without taking damage. It does not appear in the game, however, and there are no spells with this effect in the Construction Set. Even if you could gain access to the effect, however (e.g. via creating a custom spell as a mod), there is no icon assigned to the effect nor are there any visual effects or sounds made when you cast the spell. The effect itself works, however. You also would not be able to create custom spells or enchant items with this effect.