What is the meaning of Manchu on the Buddha's card?

The Manchu characters on the Buddhist tablets are usually some scriptures or spells, which are considered to have sacred power and can protect the wearer's peace, health and happiness. Manchu is a kind of scripture of Tibetan Buddhism, and it is also common in works of art and sacred objects of Buddhist culture. Because the design and production of Buddha cards involve different traditions and producers, the specific meaning and content of Manchu may be different.