Fortitude

This spell gives the recipient the ability to ignore mortal wounds and continue fighting. The creature, after being brought to 0 hit points or less, can fight normally for 1d4+1 rounds with a hit point total of -1 to -9 before collapsing. A creature brought to -10 hit points or less dies immediately. The spell effect ends once the creature dies or collapses into unconsciousness.

The material components are the caster's holy symbol and several drops of cave bear blood