I was reading one tafsir and the guy was saying it under the commentary of last 3 verses of Quran Chapter 2 that it is impossible that it is the words of Muhammad himself because when he was hurted in Taaif and came away from Taaif, he recited this dua in picture. Meanwhile, in the last 3 verses, there is no mention of hardships that he and his followers faced, instead it is praising God and humble request to get help upon the disbelievers. What do you guys say and how to respond to that claim?