Do not have mercy on idol worshippers
“Do not show them mercy” Devarim 7:2
If someone sees an idol worshiper drowning he may not save him.
If he is sick he is not to cure him.
If he is afraid of him or there are consequences of enmity, he can cure him for a fee but not for free.
If the other makes no hostile attack against him- it is forbidden to end the man’s life with one’s own hands or push him into a pit and so on.
One may not give him a free gift nor speak his praises and more certainly not praise his actions.
This applies in all places at all times for men and women