The crawling army of tiny horrors is terrifying enough, but their bites are the worst, both for Zen and his rider. Still, Gurmok has to thank Irori for his good fortune: Today's marketplace customers just happen to have remarkable reflexes and skill at arms! The two largest threats fall, and the robed guard wisely moves away from the worst of the swarm. The obvious course of action is to get away as well - Zen doesn't need to be asked twice. From his slightly safer position, Gurmok takes stock of the situation. Looks like this really hurts, the blessing of Irori is well warranted in this case...
"Irori, bénis ce camarade
Certes, je ne le connais nullement
Mais contre ces horreurs il me garde,
Donc je le veux conserver vivant..."
From his pointed finger, a ray of greenish light strikes the bleeding guard, easing the pain and closing many of his wounds.
Spoiler
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EDIT I forgot to add the effect of sickened. This doesn't change the outcome.
Damage from swarm:
Gurmok: Refl DC18 (1d20+5)[8] damage (1d6)[4] - ouch, crit fail
Zen: Refl DC18 (1d20+8)[20] damage (1d6)[6] (was in fact rolled in OOC)
Action #1 Command Zen, who uses his Juke reaction to Step to G11, then Strides 40ft to M9.
Action #2/3 Cast Heal on Sadar (1d8+8)[12]
Gurmok, level 1 cloistered cleric of Irori
Speed 25
Perception +6; darkvision
AC 11; Fort +3, Refl +4, Will +7 (includes sickened 1 condition)
HP 4/15
Zen, goblin dog (trained animal)
Perception +6; low-light vision, scent (imprecise) 30 feet
Speed 40
AC 17; Fort +8, Ref +8, Will +5
HP 14/17