ॐ शिवे भगवे भक्षे भगे भंग क्षोभय क्षोभय मोहय मोहय छदाय छदाय कलेटय क्लीं शरीरे ओम फट स्वाहा The person putting on or holding the Yantra would chant definite mantras often to allow it act its functionality by allowing in the divine forces or energies to your existence around them. https://tantramantraaurvigyaan.com/