Freezing Blood (3.5e Maneuver)

Attacking you is as exhausting as trying to face down a glacier

You embody the tenacity of the glacier to exhaust your enemy. You may initiate this counter after you are attacked in melee, whether a hit or miss, or before the result is known. The attacker must make a Fortitude save (DC 12 + your Constitution modifier) or be fatigued. If you initiate the maneuver before the result is known, this may cause the attack to miss or reduce the damage it does.