Cundī dhāraṇī or mantra also very first appeared in the Kāraṇḍavyūhasūtra: namaḥ saptānāṃ samyaksaṃbuddha koṭīnāṃ tadyathā oṃ cale cule cunde svāhā The Durga Gayatri mantra is dedicated to Goddess Durga, celebrated for her power and protective power. This is reported being the whole world most powerful mantra chanted by Hindus https://www.facebook.com/share/1J6iVuTuXb/