Sphere of Security

Sphere of security protects the priest who casts the spell and his companions within the area of effect. Enemy creatures within the area are unaffected.
The sphere grants affected creatures a +2 bonus to armor class, a +2 bonus to all saving throws vs. magic, and 50% magic resistance.
Casting this portion of the spell requires 1 round. In addition, the priest can specify as many as four additional specific protection effects from the List of Protection Scrolls in Appendix 3 of the DMG. Each additional protection lengthens casting time by 1 round. The priest may create one effect per 5 levels of his experience, to a maximum of four effects.

[Tome of Magic]

Sphere: Protection
(Abjuration)
Quest

Range: 0
Components: V, S
Duration: 6 turns
Casting Time: Special
Area of Effect: 10-foot-radius sphere
Saving Throw: None