Aneinu

Aneinu, also transliterated as Aneynu or Anainu (Hebrew for "answer us") is a Jewish prayer of atonement, asking God to forgive and protect his followers. It is most often recited by a cantor on public fast days including the Fast of Gedaliah, the Tenth of Tevet, the Fast of Esther, the 17th of Tammuz, and Tisha B'Av.