ॐ प्रजापतये स्वाहा। इदं प्रजापतये न मम। Saptashati implies chanting of seven hundred Shloka, describing the value of Goddess Durga, and her trigunatmak Electricity or three electricity/ energy aspect. It's the one among the ancient textual content that explain Devi because the supreme ability and Strength that is the creator https://www.youtube.com/watch?v=QIX0JZlLsgE