The deterrent value of Phalanx would have kept the Skyhawks and Mirages that got past the SHAR screen out of bomb alley.
The important thing is layering the defence, AEW A/C and CAP, Radar pickets, medium range SAMs, MANPADS and CIWS then lads and lasses on deck with anything they have from miniguns to SA80s.
Without Naval Aviation the SK Asac will just watch the bad guys zap all our fleet.