We ask them to pray for us, just as you (presumably) ask others to pray for you.
Turning that into something un-Christian tells us all a lot about how you (mis)define Christian.
I guess that words like intercession have too many syllables for some people.
You know that it’s quite possible that Calvinists DO NOT ask others to pray for them, for that matter they may not even pray themselves.
If EVERYTHING has been predestined, what is the point in prayer? They don’t believe that prayer can actually change anything and the last thing they want is for an unpredestined person to pray for them.