The most potent Durga Prayer for Navaratri "BHAVANYASHTAKAM (Eight stanzas of Bhavani Prayer)" written by Adi Shankara in Sanskrit translated in English:
4 th Stanza
न जानामि पुण्य़ं न जानामि तीर्थं, न जानामि मुक्तिं लयं वा कदाचित्।
न जानामि भक्तिं व्रतं वाSपि मातर्गतिस्त्वं गतिस्त्वं त्वमेका भवानि।।
meaning -
I do not know how to be righteous or find your abode.
I do not know how to achieve freedom by dissolving my ego.
I am devoid of the will to fight; I surrender.
I am not strong enough to make any vow.
O Mother of the universe - You are my saviour, my eternal refuge.