[Jafet_Macario]

pawn Код:

new bool: God[MAX_PLAYERS];

public OnPlayerDeath(playerid, killerid, reason)
{
    if(God[killerid] == true && killerid != INVALID_PLAYER_ID)
    {
        SetPlayerHealth(killerid, 0);
        God[killerid] = false;
    }
    return 1;
}
    if (strcmp("/godon", cmdtext, true, 10) == 0)
    {
        SendClientMessage(playerid,0xAA3333AA,">>");
        SendClientMessage(playerid,COLOR_RED,"GodMod ON!");
        SetPlayerHealth(playerid,99999);
        God[playerid] = true;
        return 1;
    }   


    if (strcmp("/godoff", cmdtext, true, 10) == 0)
    {
        SendClientMessage(playerid,0xAA3333AA,">>");
        SendClientMessage(playerid,COLOR_RED,"GodMod OFF!");
        SetPlayerHealth(playerid,100);
        God[playerid] = false;
        return 1;
    }

EDIT: User above was faster