Mindblade vs. PR

[Teneb]

Quick soulknife question that came up at last night's game. Does psionic resistance work against a mindblade? I.e. everytime I attack a foe with PR, do I have to overcome PR to damage that foe? I couldn't find a definitive answer in the SRD. Thanks for the assistance!

 

[Drowbane]

Mindblades are (Su). No Power (or Spell) Resistance.