D&D 5E - Monk Evasion is limited to which certain area effects?

At 7th level, your instinctive ability lets you dodge out of the way of certain area effects, such as blue dragon's lightning breath or a fireball spell. When you subjected to an effect that allows you to make a Dexterity saving throw to take only half damage, you instead take no damage if you succeed on the saving throw, and only half damage if you fail.