Surelife

This spell allows the caster to protect themself against some condition that would ordinarily cause certain death. The caster can only protect them self against a natural occurrence or condition, not against a spell or the action of a creature. The caster must specify the condition against which they wish to protect themself, and the spell is effective only against that condition. Should the caster be subjected to that condition during the duration of the spell, they feel no discomfort and take no damage from the condition. However, the spell does not protect any items carried on the caster’s person. At the end of the spell’s duration, the condition has full normal effects if the caster is still subjected to it.

Adapted from previous versions of D&D