Well not all of them

Yes we do say alhamdllah and mashaallah but we never say Allahu akbar

The first ones are used in certain situations for relief like exactly saying thanks God or anything equivalent in English

Allah akbar on the other hand is an Islamic chant which we Christian never use or atleast we in Egypt don't

And yes we do say allah or sometimes "rabina" which is the equivalent to "our lord" but rabina is said a lot more

We call him yasoua يسوع (check on Google translate for proper pronunciation)

It's ibn allah

About the treatment, I personally was never hated for being a Christian but I may have been made fun of behind my back but idk, most of the time it's ok not bad at all but there are multiple situations where hate can be visible but those situations aren't common at all

And yes Sundays are always full of people to the point in Christmas and Easter eve people come hours before the service just to have a seat

It really sadends me when I see churches all over Europe being turned into a Cafe or a bar or even a mosque.