antifakekill

#include <a_samp>

new pLastDamager[MAX_PLAYERS] = {65535,...};

public OnPlayerDisconnect(playerid, reason)
{
	pLastDamager[playerid] = 65535;
	return 1;
}

public OnPlayerDeath(playerid, killerid, reason)
{
	if(killerid != pLastDamager[playerid])
	{
		Kick(playerid); //change to your's
    }
	return 1;
}

public OnPlayerTakeDamage(playerid, issuerid, Float:amount, weaponid, bodypart)
{
	if(issuerid != 65535)
	{
	    pLastDamager[playerid] = issuerid;
	}
	return 1;
}