Paging Hari Seldon, please answer the white courtesy phone...
(That aside, this is hokum, we have millenia of history to show us what happens when religions collide. Within that historical framework, atheism is the weakest of all, and is actively killing itself in the world today. The only reason it hasn’t succeeded so far is because it’s been allowed to leech on the body of what had been the strongest religion. What happens next remains to be seen.)
“You’re slated to take in 50,000 refugees from the Middle East this year. Most of them are very religious, while most of your population is very secular. You want to integrate the newcomers seamlessly, minimizing the risk of economic malaise or violence, but you have limited resources ... What do you do?” If those 50,000 refugees are Islamic, it will not end well. Under ANY condition. Just no. Don’t do it.