Is the person who unintentionally collided with a woman considered to have wronged her, and would her prayer against him for failing his final exam be accepted, and what should he do?

As long as the action was unintentional, the sin is lifted from the one who erred, based on the Almighty’s saying: "And there is no blame upon you for that in which you have erred, but [only for] what your hearts intended," and based on the Prophet’s (peace be upon him) saying: "Indeed, Allah has forgiven my Ummah for their mistakes, forgetfulness, and what they are forced to do." Therefore, it is advised to adhere to Allah’s commands and to turn away from the matter of that woman, for her supplication, if it occurs, is unlawful and will not be answered.