Praying for Gentile Friends and Strangers

What is the best way to pray for my Gentile friends and even strangers? When’s the best point in Davening? Would it be during Shma Koleinu?

I love many of my Gentile friends like family and wish to pray to Hashem for them and for other good people, whether or not they’re Jewish like me. Many have been better people to me and others than many Jews I know so the Jewish-Non Jewish axis doesn’t matter to me in judging character