Body Shield

As an immediate action while you are grappling
an adjacent creature, you can make a grapple
combat maneuver check against that creature to
gain cover against a single attack. If you are
successful and the attack misses you, that attack
targets the creature you used as cover, using the
same attack roll. You cannot use this feat against
a creature grappling you, and the cover you gain
ends after the attack you gained cover against is
resolved.