Sandstone Guardian Statues are monsters encountered in later Egypt (Act II). They are constructs with many resistances/immunities, including poison, piercing damage, vitality damage, life and energy leech. Also Guardian Statues have chance to deflect projectiles. However, they are fairly slow and do only moderate melee damage.
Neb-kemi, a undead minor boss encountered in the side quest The Corrupted Priest, is also always protected by a few of these statues.