Reflect acts very much like Aero. However, unlike Aero, it produces a barrier of light for a second that guards from attacks, nullifying all damage, 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. In fact all attacks can be reflected, with correct timing.
Reflect and Magnet replaced Aero, Gravity, and Stop from Kingdom Hearts. The Reflect spell has only appeared in Kingdom Hearts II. Although no enemy uses Reflect, both Silver Rock and Roxas use the element of Light, which is present in the spell.
Reflect magic is classified as Defensive Magic.
Reflect is Aqua's guard ability in Kingdom Hearts Birth by Sleep. She can disperse it into blasts of light if its struck, similar to Kingdom Hearts II.
In Kingdom Hearts II, 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.