Regarding a subpoena?

[A Miller]

I have been called to court via subpoena. Long story short, my two neighbors brawled their older brother on my property so I have been sucked into this situation. This isn't a problem of course as I am not really involved with the charges and whatnot, but I am however worried about the consequences of testifying against my neighbors. They are pretty creepy (from Middle East so I never know what they're saying anyway) and always mean mug me when I walk around my house, so I know they already don't like me as it is before this even happened. I'm afraid they will end up trying to cause problems with me or my property as I will be testifying against them in court. I've never been to court as well. Should I be worried about this? Is there anything I could do protection wise? Or should I man up and quit over reacting ha? Thanks for the advise.