Nathan is going to attempt to feint Ferrus as represented by Nathan changing his stance to a more defensive one to lull Ferrus into an even more aggressive and open attack
Deception check: 1d20+12+1 (is Gialle’s +1 buff to skill checks still applying?) = 32

Regardless if Gialle’s buff is applying right now or not, Nathan’s feint could probably work and should open up Ferrus for (hopefully) a successful attack next turn that’ll knock him down the condition track a little
Also this occurs after Gialle’s turn