[UberEverywhere]

Код:

public OnPlayerGiveDamage(playerid, damagedid, Float: amount, weaponid, bodypart)
{
    new float:health;
    GetPlayerHealth(damagedid, health);
    if(damagedid != INVALID_PLAYER_ID)
    {
      	if(PlayerInfo[damagedid][pFreezeTime] != 0)
        {
            SendClientMessage(playerid, -1, "This player is frozen, you can't shoot him.");
            SetPlayerHealth(damagedid, health);
            amount = 0;
            return 0;
        }
    }
    return 1;
}

untested, not sure if it's even correct lol
just try, if it didn't work just let me know