Evade

Evasion allows a character to avoid an attack that was about to hit him/her. Guildwars offers many Evasion skills:
 * Elementalist: Ward Against Melee (evades melee attacks only).
 * Mesmer: Distortion
 * Monk: Shield of Deflection
 * Necromancer: None.
 * Ranger: Escape, Lightning Reflexes, Dodge (only evades ranged attacks) and Dryder's Defenses.
 * Warrior: Defensive Stance

Note: Spells cannot be evaded, though spells that cast projectiles may miss.