How can the Hadith, "No prophet has been harmed as much as I have been harmed," be reconciled with the severity of the trials of other prophets such as Noah, Abraham, Job, Joseph, and John—peace be upon them?

No authentic hadith has been found with the wording "No prophet was harmed...", but what is established is his (peace be upon him) saying: "No one has been harmed as much as I have been harmed," and in another narration: "No one has been harmed as much as I have been harmed for the sake of Allah." Al-Albani graded both as hasan (good). It is probable that its meaning is that he was inspired with what the prophets before him were harmed with, or that he was harmed before harm reached his companions, due to his saying: "I have been subjected to fear for the sake of Allah, and no one else is subjected to such fear, and I have been harmed for the sake of Allah, and no one else is harmed." This indicates his uniqueness in suffering harm and fear at the beginning of the call. And the Prophet's (peace be upon him) saying about Musa (peace be upon him): "May Allah have mercy on Musa; he was harmed more than this, yet he persevered," indicates that the prophets were harmed more than him.