The Blade Dodge was a combat move in Batman: Arkham City, Batman: Arkham Origins, and Batman: Arkham Knight. The move was used against enemies equipped with sharp objects (thugs with knives or broken bottles, or Assassins with Swords) who would attack with multiple swipes in quick succession. The Blade Dodge was an extension of the normal counter move to that series of attacks. The player held the Counter button and moved away from the enemy to dodge every swipe.
Releasing the counter button in between each swipe performed a Blade Dodge Takedown instead, that knocked the enemy unconscious.