well, here's a good thing with wizard...
I build my char Hybrid with lots of HP and then i add more points in MAG just to be able to kill some mobs without being hurt...
So i'd say, whatever the build you chose, you should be able to kill some mobs (at least those with just basic attacks like taurocs...) without being injured.
Wizards have many skills to do that. U can creat a combo just for that specific attack.
So if you can't do that, maybe you should add some more points in MAG.
have fun