Short but effective, easy and extremely powerful Durga Mantra !
Om Aeeng Hreeng Kleeng Chamundayai Vichchai
Om Aeem Hreem Kleem Chamundayai Vichchai
You may select the pronunciation that is most convenient for you.
This is the most well-known mantra chanted in honor of goddess Durga. To put it simply, it calls upon the combined powers of the trishakti (trinity) of MahaSaraswati, Maha Lakshmi and Maha Kali.
Aeem invokes Maha Saraswati, Hreem invokes Maha lakshmi and Kleem invokes Maha kali. A literal translation asks these three powerful goddesses to bless one with knowledge, wealth and protection from evil