Reflect

Reflect, Reflera, and Reflega magic are attacks used by Sora, Donald, and other characters and enemies that utilize the element of Light.

Reflect acts very much like Aero. However, unlike Aero, it produces a barrier of light for a second that guards from attacks, then it goes away. With the addition of Reflera, any enemies within the Reflect dome when the spell is cast are injured. Reflega is a powerful attack that shields Sora from an attack, and then unleashes a spray of light around the dome that does damage equal to the enemy's attack power to anything hit by the light. However, not all attacks can be reflected.

Reflect replaced Aero, and only appeared in Kingdom Hearts II. Although no enemy uses Reflect, both Silver Rock and Roxas use the element of Light.

In Kingdom Hearts II: Final Mix+ in the secret ending, Birth By Sleep, Aqua is shown to use a spell similar to Reflect.

Reflect magic is classified as Defensive Magic.

Kingdom Hearts II
Reflect: Granted after defeating Pete in Timeless River Reflera: Upgraded after defeating Xaldin at Beast's Castle Reflega: Upgraded after defeating the MCP in Space Paranoids

Trivia

 * Reflect is one of the three spells that can harm Sephiroth.
 * Reflect is the only way to guard against Xaldin's dragon attack, in which he sprays the entire battlefield with deadly winds.