You guys are seriously overthinking this /click thing. There is no need to make a /click macro for a Pve Prot Pally (well ok there is one valid reason and that is you can not macro your full rotation in 255 chars)

Reason being:

a) The Rotation is fixed (ie not priority based)
b) All attacks are instant so server->client confirmation happens within the GCD unless you have really terrible latency.

I would recommend using Niley's /castsequence macro