Obsidian is a very protective stone with its shielding and repulsing abilities Obsidian can protect you from spirits, psychic attacks, unwanted entities, negative energies, and ill-wishing directed towards you. Obsidian is a unique stone that absorbs and transforms negative energy, whether from within or around you, making it a powerful protection stone that shields against psychic attack, removing negative patterns and regenerating the energy field of the aura.