It appears that Israel's raid into Syrian territory in order to take out a nuclear facility, a chemical weapons depot, or a missile storage unit (depending on who you believe) also had one other side benefit; the raid exposed the brand new Russian air defense system bought by Syria and Iran to be useless against Israeli airplanes:

Information coming out of Iran indicates that the military there is very dismayed at how ineffective new Russian anti-aircraft systems were during the Israeli September 6th air strike on a Syrian weapons development facility near the Iraqi border. Syria and Iran have both bought billions of dollars worth of the latest Russian anti-aircraft missile systems. Apparently the Israelis were able to blind these systems electronically. Syria isn't saying anything, nor are the Israelis, but Iranian officers are complaining openly that they have been had by the Russians. The Iranians bought Russian equipment based on assurances that the gear would detect and shoot down Israeli warplanes....

The Iranians fear an Israeli air strike against their nuclear weapons development facilities. It was thought the new Russian missiles and radars would persuade the Israelis to stay away. But now the raid on Syria looks like a dress rehearsal for one a little further east. Since Iranian leaders have openly called for the destruction of Israel, one can't deny the Israelis a little self-defense. Thus the cries and whispers in Iranian military headquarters. A lot of this is leaking on to Farsi language email and message boards. There is much angst and unhappiness.