Energy Shield

Abjuration (Ward) Tier: 3 Components: Verbal Casting Time: 1 reaction or 1 major action Range: 40 ft Target: One creature Duration: Instantaneous Saving Throw: Spell negates (harmless) The blast of flame streaks towards your ally, but you stop it inches from his skin.

When you cast this spell, specify an energy type (acid, cold, electricity, fire, or sonic). Against the next attack with this energy type that would damage the subject, it gains resistance 20.

You can cast this spell as a reaction when a creature within range would take damage from energy. 

Alternately, this spell can be used as a major action. 

Augmentation:If you cast this as a tier 4 spell, it grants resistance 25.