His supplication to be written on the deer's skin to avert black magic

In the name of Allah, the Beneficent, the Merciful In the name of Allah and by Allah, glorified is Allah in the name of Allah and there is no power or strength except Allah the most High, the Great. Moosa (a.s.) said to them: What you have brought is deception, surely Allah will make it naught; surely Allah does not make the work of mischief-makers to thrive. And Allah will show the truth to be the truth by His words, though the guilty may be averse (to it). So the truth was established, and what they did became null. Thus they were vanquished there, and they went back abased. (Surah Yunus: 81-82, Surah Araaf: 118-119)