Don't have much experience translating, but hopefully this came out okay.
Emiya! Stop this! What's gotten into you!?Is it the culture here for the older Servants to greet the new arrivals this way?Increase in magical power output detected within ChaldeaHmmm?Fighting Servants are to discontinue battle immediatelyRepeatFighting Servants are to discontinue battle immediatelySurprisingly hot-blooded, brother.