That's quite funny
Nobody would give it any credibility though. The only people able to determine "the miracle of the Arabic" would be familiar with the Quran enough to know they were not real verses, and fooling anyone else would be irrelevant.
I know, but I mean it would give people who don't know Arabic and rely on translations a whole lot less reason to call themselves actual Muslims.
You could only do it face-to-face though, otherwise they could just cheat and google the verses to see which is the fake one.
Or you could have it timed
And since there would be 4 fake verses and one correct verse, copy pasting the correct one would be a 20% possibility. Of course, they most likely wouldn't copy paste the correct one and it would only waste that oh-so precious quiz time.