Stoneskin, Communal

All allies within 30 feet gain resistance to blows, cuts, stabs, and slashes. They gain DR 10/adamantine. It ignores the first 10 points of damage each time it takes damage from a weapon, though an adamantine weapon overcomes the reduction. Once the spell has prevented a total of 10 points of damage per caster level (maximum 150 points), it is discharged.