Unknown Authorship. Found pasted into a manuscript of Rosh Ha-Shanah nusach by Abraham Baer, dated 1870. Translated by Hinda Tz. Eisen, 2013.
God, True King, Shaddai, the Highest Ruler, accept my supplication willingly and with strength of heart. […] Have mercy upon me and hear the prayer which I pray today for myself and for my household and for my witnesses who agree with my prayer. Include my prayer among the righteous and the clean prayers that Israel will make. […] May the words of my mouth and the meditations of my heart be acceptable before You, Lord, my Rock and my Redeemer, Amen Selah. May it be Your will, O Awesome One, that you will bestow upon me a pleasant and pleasing voice today, and may my voice not give out and my throat not tire; may my voice be pleasant and strong like it says [in Your Torah], “the voice of the Shofar was ever-going and strong.” Amen, Selah.