Facing two or Three Mobs:
Paladin doesn't have high burst Power, so it's kink of hard for Paladin to deal with such situation. But you can still have a try. Use Divine Storm and Consecration first on all the targets. Keep Consecration effects on targets all the time. Then use Crusader Strike and Judgment of Light at primary target. Carry on with Hammer of Wrath when his HP is 35% below. You should also heal yourself during the combat. Back up with strong healing ability, eliminating enemies is just time of matter. If you mana is low use Judgment of Wise instead of Judgment of Light to regain some mana.
if you feel that you are going to lose, the smart idea will be getting away from the combat. Paladin has strong protecting and healing ability. You can use Repentance to incapacitate the enemies and withdraw from combat. Or you can use Divine Shield and Hand of Freedom to flee and prevent you from being stunned or slowing down by enemies.