" Hrim vatukaya apadudharanaya kuru kuru batukaya hrim."
“Om hreem vam vatukaaya Aapaduddharanaya vatukaaya hreem”
“Om Hraam Hreem Hroom Hrime Hroum Ksham Kshetrapaalaaya Kaala Bhairavaaya Namaha”
Kala Bhairava Gayatri Mantra
Om Kaalakaalaaya Vidhmahey Kaalaatheethaaya dheemahi Thanno Kaala Bhairava Prachodhayaath.
For more details of this diety check my hub Kalabhairava - The Lord of the March of Time.