Here are three Kali Mantras for meditation

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Om Krim Krim Krim Hum Hum Hrim Hrim Dakshine Kalike Krim Krim Krim

Hum Hum Hrim Hrim Swaha

 

Translation: The cause which moves the subtle body to the infinite

perfection and beyondcut the ego! Cut the ego! Maya! Maya! Oh

Goddess who removes all darkness, the cause which moves the subtle

body to the infinite perfection and beyond, cut the ego! Cut the ego!

Maya! Maya! I am one with God!

 

 

Om Hrim Srim Krim Parameshwari Kalike Swaha

 

Translation: Om Maya, increase, dissolution, to the Supreme Female

Divinity, Kali, I am one with God

 

 

Om Krim Kaliyai namah

 

Translation: Om I bow to the Goddess Kali who takes away darkness

 

These are all from Swami Satyananda's Kali Puja book.

http://www.shreemaa.org/bookstore.htm