This is likely to cause immense outrage among Muslims, but consider this: most of the time the party line is that the terrorists are hardly Muslims at all, but are perverting and twisting and hijacking a peaceful religion.
I have seen many Muslim spokesmen in the West loudly say that they don’t have to apologize for the deeds of the terrorists, because the terrorists aren’t true Muslims. So if they aren’t, why is this a big deal (as it almost certainly will be)? But I expect that there will be expressions of outrage that the Pope is praying for the conversion to Christianity of any Muslim — suddenly, the terrorists will turn out to be Muslim after all.
Note further down in the story:
…the Muslim world, which has already attacked the Pope for publicly converting Magdi Allam
Nice verb, that: “converting”. It makes Allam sound like he has no free will of his own, which, as far as his Muslim critics are concerned — is actually true.