﴿ وَقَالُوا۟ يَٰٓأَيُّهَ ٱلسَّاحِرُ ٱدْعُ لَنَا رَبَّكَ بِمَا عَهِدَ عِندَكَ إِنَّنَا لَمُهْتَدُونَ ﴾

“And [every time] they exclaimed: “O thou sorcerer! Pray for us to thy Sustainer on the strength of the covenant [of prophethood] which He has made with thee: for, verily, we shall now follow the right way!””

Please check ayah 43:50 for complete tafsir.