Your mind is better able to resist psionics than normal.
Benefit

You get a +2 bonus on all saving throws to resist powers.

The benefit of this feat applies only to psionic powers and psi-like abilities. This is an exception to the psionics–magic transparency rule.
Special

You cannot take or use this feat if you have the ability to use powers (if you have a power point reserve or psi-like abilities).