Are you 1-boxing a Ret?
I squeeze everything i can bewteen CS cool downs. Glyph and round robin Holy Wrath for stuns.
Use Seal of Insight and Divine Plea to compansate for Exorcism mana cost.
Go to the Macro and Addon section for more ideas.

#showtooltips
/castsequence reset=combat Crusader Strike, Holy Wrath, Crusader Strike, Rebuke, Judgement, Crusader Strike, Exorcism, Templar's Verdict,
/cast [@focus] Repentance


#showtooltips
/castsequence reset=combat Crusader Strike, Judgementt, Crusader Strike, Holy Wrath, Rebuke, Crusader Strike, Exorcism, Templar's Verdict,
/cast Hammer of Wrath
/cast [combat] Avenging Wrath

2nd Button alternate with the above for Zealotry procs.
#showtooltip
/castsequence reset=combat/20 Zealotry, Inquisition, Templar's Verdict, Templar's Verdict, Templar's Verdict, Templar's Verdict, Templar's Verdict, Templar's Verdict, Templar's Verdict, Templar's Verdict, Templar's Verdict, Templar's Verdict,
/cast Guardian of Ancient Kings