Stoneskin

Stoneskin is an abjuration spell that blocks blows, cuts, stabs, and slashes.

Effect
The warded creature gains resistance to blows, cuts, stabs, and slashes. The subject gains damage reduction 10/+5. (It ignores the first 10 points of damage each time it takes damage, though a weapon with a +5 enhancement bonus or any magical attack bypasses the reduction.) Once the spell has prevented a total of 10 points of damage per caster level (maximum 150 points), it is discharged.

Material Components
Granite and 250 gp worth of diamond dust sprinkled on the target's skin.