Very powerful gayathri mantra for goddess durga

very powerful gayathri mantra for goddess durga
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Om Kathyayanaya Vidhmahe
Kanya Kumari cha Dheemahe
Thanno Durgaya Prachodayath. 

meaning 

Om, Let me meditate on the goddess who is daughter of Kathyayana,
Oh, maiden Goddess, give me higher intellect,
And let Goddess Durga illuminate my mind.