i hope that the Israeli blow would be great,but i doubt that,in 1991 39 Sqads were shot to Israel and Israel did not even respond in the media for this,the Patriot then caused only more damage,but it has benn 19 years since then,the Patriot is better now and Israeli officials say the Arrow can deal with all the missles shot at Israel(i think they even said above Jorden)
and u have to remember that Israeli jets can fly all the way to Iran and back,maybe even from US carriers(unlickly but how awsome would that be?)
u also have to remember about the Israel-Lebanon Border with Hezbollah which is a greater threat to Israeli civvilans as it has more missiles he can shoot at Israeli people,far better capabilities than in 2006,but Israel has done it's homework to.
but honstly i dont think the area would esscelaite to such war,both sides do not wish a vast and open war.
Israel cannot afford that,Iran is dealing with inner problems and Hezbollah if u like it or not is still broken.