I went and did this along with my ally and the first thing we did was roast their main buildings. Granted it was 8 void rays (between the both of us), but what the hey... you can't touch that many before the damage is done.IskatuMesk wrote: As for air, protoss options are limit vs z. You'll need phoenixes and stalkers, preferably with blink. Vs other void rays (aka what I did to you), stalkers are generally sufficient.
I had another game where my main got attacked by a pair of cloaked banshees-- had an observer sitting there the whole time (no cannon, though) and warped a couple stalkers in and they took care of the rest.
Only major lesson I get from this is I need more warp gates. Most of the time I stop at two and then get forced into building the stargates instead (although I have yet to resort to using carriers extensively). I haven't quite figured out where the Phoenix's aerial shackles spell research is yet, although so far it hasn't been necessary. But there's been several instances where I really needed more than what two warp gates could offer.