Who on the UNSCR will vote to take such action? (Expel US and UK in areas where the Syrian government has No control and has more or less ceded sovereignty as part of its five year long civil war with a variety of factions trying to toss out the Assad regime ...) Oh, wait, I am pretty sure that there are two members on the UNSCR who won't. Fail.
The Syrian government can file a protest. If they have not already, I suspect that they will. If they file it in the GA they'll at least get some
PR/Propaganda/sentiment points with people sympathetic to their cause.
Just curious: do you understand how the UN really works, or are you not familiar with its actual function when it comes to collective security activity? When it comes to expelling one group of folks from a territory, you might wish to review three cases:
1. South Korea. (more or less successful, with side effects)
2. Kuwait. (Successful)
3. Bosnia. (Unsuccessful when it was the UN alone, successful when a regional collective security organization, NATO, decided to act and tell the UN Dual Key RoE twits to take a hike).
In each case, the involvement of the UNSCR, and in particular its permanent members, had a significant influence on what action the UN did, or did not, take.