Vasily's strike hits (19 damage after resistances), and the Priest's expected healing fails.

The Serpent's griffin, scorched, drops from the sky. From its back, the plate-mail clad figure lashes out with his staff, connecting twice.
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The 31 & 28 hit, the 23 did not.
36+32 = 68 damage


The priest next to Vasily sneers at the aura of spirits around him and casts a Dispel Magic on the paladin, then guides his spectral dagger to stab him.
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Priest 2. Dispel, then BA Spiritual Weapon
(1d20+8)[22] and (1d8+4)[12] force damage.


The other priest, just to the north of Sleth, rattles out an imprecatory chant against Sleth and his presumably inferior ancestry.
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Priest 1
Harm, (14d6)[59] necrotic damage, Con DC 16 half; on a failed save, max HP reduced for 1 hour.


Senior Priest 3 continues to fly away under the influence of Suggestion.