Zealot are fantastic I tell you and can handle at least 3 each, and if they are together u can kill 5-6 zerglings easy without loosing more than 1 Zealot

Novus Ordo Seclorum

Hence, when able to attack, we must seem unable; when using our forces, we must seem inactive; when we are near, we must make the enemy believe we are far away; when far away, we must make him believe we are near.

Sun Tzu