Parry Attack

The Parry attack, also called the Reaction Command, is one of several moves that Link learns from Orca on Outset Island in. It can be performed by L-Targeting certain opponents, then hitting the A button when the corresponding button icon flashes. This will make Link perform an automatic counterattack, but it is important to note that the Parry attack cannot be used while Link has his shield raised.

Parrying is particularly effective against Darknuts, as it can remove their protective armor and expose them to more fundamental attacks.

Types of Parry Attacks
Link's in-game movement depends on the opponent, and the attack it's attempting to use. One motion consists of Link rolling sideways to reach his opponent's back, then jumping up and slashing with his sword; this motion is usually used to evade vertical-striking attacks. Another involves him leaping over his adversary, slashing their head in the process; this is often used to counter horizontal sweeps. The third parry attack has Link leap into the air while remaining in front of his target, and stabbing his sword downward at their weak point; used most often on Magtails and Floor Masters when they are about to strike or drag Link back to the start of a dungeon, respectively. The final parry attack is used at the end of the battle against Ganondorf, in which Link combines the rolling slash of the first parry attack to slice Ganondorf from behind and the jump-and-stab motion of the third parry attack to strike his forehead. These first three movements are similar to three Hidden Skills in : Back Slice, Helm Splitter, and Ending Blow, respectively.

Trivia

 * Despite its name, it is actually a counterattack.