Looking for a Garry's Mod Sandbox Addon!

So I own a sandbox server and was wondering if there is a addon which can protect players from people who want to PVP, See People on my server want to build but get slaughtered by the PvPing guys, I have seen on another server that someone would type !build in the chat and have there weapons stripped and not be able to damage others or take damage, Is there someway I can implement this or is there a existing addon for this, (I have looked on the internet but can’t find it)

I would appreciate any help anyone gives me.
Thanks

i would just turn on god mode for everyone

For my sandbox server i user vermilion 2. It is very awesome and you can control EVERYTHING on your server! here is the link to vermilion 2 http://steamcommunity.com/sharedfiles/filedetails/?id=338063408

----that is good

There is an addon called !buildmode on workshop