MAKE PLAYERS SAFEZONE

To make a player safezone, where players can not kill each others, you have to follow theses steps

1-In Init.sqf past this :

[] execVM "safezone.sqf";

2-Make safezone.sqf and past inside :

#define SAFETY_ZONES    [["safezone_yanov", 100]] // Syntax: [["marker1", radius1], ["marker2", radius2], ...]
#define MESSAGE "Firing/Grenades Disable this close to Spawn!"

if (isDedicated) exitWith {};
waitUntil {!isNull player};

player addEventHandler ["Fired", {
   if ({(_this select 0) distance getMarkerPos (_x select 0) < _x select 1} count SAFETY_ZONES > 0) then
   {
       deleteVehicle (_this select 6);

        player setDamage 0;
       titleText [MESSAGE, "PLAIN", 3];
   };

}
];

3-Place a marker (1x1) on the map (where you want place your safezone) named "safezone_yanov"

The zone around the marker (100 meters) will be protect : no one will be able to shoot any players, after theses 100 meters, people will be able to shoot