/** Lista com os nomes dos participantes */
List<String> suaArray = new ArrayList<>();
@EventHandler
public void onEntityDamageByEntityEvent( EntityDamageByEntityEvent event )
{
if ( !(event.getDamager() instanceof Arrow) || !(event.getEntity() instanceof Player) ) return;
Arrow arrow = (Arrow) event.getDamager();
Player shooter, victim = (Player) event.getEntity();
if ( (shooter = (Player) arrow.getShooter()) instanceof Player && suaArray.contains(shooter.getName()) && suaArray.contains(victim.getName()) )
{
event.setCancelled(true);
}
}
Se algum moderador puder juntar os posts eu agradeço, desculpe pelo double post.
Vê se ta funcionando... nao testei.