Saving Throw

Most harmful powers allow an affected target a saving throw to avoid some or all of the effect. Each power lists which saving throw type applies. The DC for a saving throw to resist a power is 10 + the power's level + the psionic character's key ability modifier. The terms used to define the various types of saving throws and results are the same as for spells.

Power Resistance

Power resistance is a special defensive ability that protects against psionic powers. If a psionic character faces a creature with power resistance, he must make a level check (1d20 + psionic character's class level) equal to or greater than the creature's power resistance for the power to affect it.
Each power description includes an entry that indicates whether power resistance applies to the power (if so, Yes; if not, No). Other details are the same as for spell resistance.