there's no actual rotation per say aside from the cooldown rotation.
most of your skills are 6 sec cooldown or close to 9sec cooldown and since global cooldown is 1.5sec it evens up perfectly.
you use your skills depending on their cooldown: 96969696969
cooldowns with 6 sec: Hammer of the Righteous, Shield of Righteousness
cooldowns around 9sec: Judgement (1 point in imp judge), holy shield, concecrate, (you can also add longer cooldowns in place of any of this cooldown slot like Avenger's shield or Exorcism/holy wrath)
generally i pull with avenger's shield and then as the mob gets to me i holy shield then hammer of the righteous, then judge, then shield of righeousness, then conc, then hammer again... etc.