Cundī dhāraṇī or mantra also first appeared in the Kāraṇḍavyūhasūtra: namaḥ saptānāṃ samyaksaṃbuddha koṭīnāṃ tadyathā oṃ cale cule cunde svāhā The Durga Gayatri mantra is devoted to Goddess Durga, celebrated for her toughness and protective ability. This is certainly said to get the entire world strongest mantra chanted by Hindus https://tantramantraaurvigyaan.com/