Calm down everyone...well, some of you...
This is not an instantaneous malfunction requiring superhuman ability and lightning reactions. If the probes are blocked then Alpha Prot strip will rise progressively towards the climb speed as you climb, giving you plenty of warning. The obvious solution at this point is to descend if circumstances allow, land and write up the maintenance log.
Regarding which ADRs to turn off.. in the absence of an ECAM ADR caution it does not matter.. If you turn off 1+2 you can transfer 3 to either pilot which may be an advantage. Either that or 2+3 so the Captain has valid airspeed.