Pope Shenouda III
Well-known fasts in the Bible were also bound to prayer.
Thus, when Nehemiah fasted, he said: “When I heard these words, that I sat down and wept, and mourned ... And I said: "I pray, Lord God of heaven, ... let Your ear be attentive and Your eyes open, that You may hear the prayer of Your servant which I pray before You now, day and night... “ (Neh. 1:4-6). He then started confessing his sins and the sins of his people calling for the Lord’s intervention and mercy.
Ezra's fast was also accompanied by prayers. (Ezra 8:21,23).
The Prophet Daniel's fast was accompanied by prayer and struggle with God. He said, “O my God, incline Your ear and hear; open Your eyes and see our desolations, and the city which is called by Your name; for we do not present our supplications before You because of our righteous deeds, but because of Your great mercies. "O Lord, hear! O Lord, forgive! O Lord, listen and act! Do not delay for Your own sake, my God, for Your city and Your people are called by Your name.” (Dan 9:18,19).
In the fast of Nineveh, the people cried “mightily to God” (Jon 3:8).