[PF] Can't remember a 3rd party feat: Adjacent ally uses your CMD?

[Fenryr]

Why, hello!

As the title implies, I can't remember the name of a 3rd party feat in Pathfinder. I remember the content something like this:

Once per round, whenever an ally is subject to a Combat Maneuver, that ally may use your CMD. If the CMB exceeds your CMD you're affected by the Combat Maneuver.

Help?

Thanks.

[Fenryr]

A single bump. Anyone?