The Shielder, The Protector, The Preventer.

Allah سُبْحَٰنَهُۥ وَتَعَٰلَىٰ is Al-Mani (in Arabic: ٱلْمَانِعُ). There is no one to give what he's withheld or to prevent what He gives. He protects people from harmful situations and prevents undesirable actions. All is done according to His infinite wisdom and mercy.