Om Mata Kali

Om Mata Kali
Om Mata Durga Namo Nama

OM = Symbol of the Absolute; the sound, vibration, comprehensive
Mata = Mother
Kali (MA) = A name for parvati (wife of Lord Shiva), which means: the dark, the black (parent). It is the women of the time and therefore the destroyer of ignorance, illusion and death and the donor of wisdom and liberation
Durga = A name for parvati (wife of Lord Shiva), which means: the impenetrable. It helps us to destroy the ego
Namo = Salutation
Nam(a) = Name