Om bhurbhuvah swah tatsaviturvareñyam bhargo devasya dhimahi dhiyo yo nah prachodayat.

Its essence:

Om – Brahma or Almighty God, bhur – Embodiment of vital spiritual energy (praña), bhuvah – Destroyer of sufferings, svah – Embodiment of happiness, tat – That, savituh – Bright, Luminous like the Sun, vareñyam – Best, Most exalted, bhargo – Destroyer of sins, devasya – Divine, dhimahi – May imbibe, dhiyo – Intellect, yo – Who, nah – Our, prachodayat – May inspire.

In short it is a prayer to the Almighty Supreme God, the Creator of entire cosmos, the essence of our life existence, who removes all our sins, pains and sufferings and grants happiness; beseeching His divine grace to inculcate within us His Divinity and Brilliance which may purify us and guide our wisdom on the righteous path. (Excerpts from "Yugshakti Gayatri Ka Abhinav Avataran")