Saving Throw (Save)

When a creature is subject to a dangerous effect that must be avoided, it attempts a saving throw to mitigate the effect. You attempt a saving throw automatically—you don't have to use an action or a reaction. Unlike for most checks, the character who isn't acting rolls the d20 for a saving throw, and the creature who is acting provides the DC.

There are three types of saving throws: Fortitude (to resist diseases, poisons, and physical effects), Reflex (to evade effects a character could quickly dodge), and Will (to resist effects that target the mind and personality).