"May Allah [Glorified and Exalted is He] forgive us all" is a heartfelt and humble supplication seeking divine mercy and forgiveness. It reflects a recognition of human imperfection and the desire for Allah's pardon for all sins, shortcomings, and mistakes. This prayer is often recited with a deep sense of humility, asking for Allah's grace to cleanse the heart, restore spiritual purity, and grant peace. It serves as a reminder of the infinite mercy of Allah, who is always ready to forgive those who turn to Him in repentance. The phrase invokes a sense of unity among believers, hoping for collective forgiveness and divine mercy for all.