Magic Vestment

Player's Handbook v.3.5 (PH)Core (3.5)
School
Transmutation
Casting Time
1 standard action
Components
V, S, DF
Range
Touch
Target
One armor or shield
Duration
1 hour/level
Saving Throw
Will negates (harmless, object)
Spell Resistance
Yes (harmless, object)

Related

You imbue a suit of armor or a shield with an enhancement bonus of +1 per four caster levels (maximum +5 at 20th level). An outfit of regular clothing counts as armor that grants no AC bonus for the purpose of this spell.