Conjuration (Creation) [Force]
Level: Sorcerer 3, Wizard 3
Components: V, S, F
Casting Time: 1 standard action
Range: Close (25 ft. + 5 ft./2 levels)
Targets: One creature/level, no two of which are more than 30 ft. apart
Saving Throw: Will negates (harmless)
Spell Resistance: No
You feel arcane energy encompass you, granting you a sense of serenity. As you choose your targets for the spell, you see each one glow briefly with a silver aura.
An invisible but tangible field of force surrounds the subjects of a mass mage armor spell, providing a +4 armor bonus to AC. Unlike mundane armor, mass mage armor entails no armor check penalty, arcane spell failure chance, or speed reduction. Since mass mage armor is made of force, incorporeal creatures can’t bypass it the way they do normal armor.
Focus: A piece of cured leather.
Source: Spell Compendium, page 136. The text here is a properly altered form of the mage armor spell to account for multiple targets.)