Why does the Torah see fit to inform us what those who feared Hashem did, and [in the next verse] what those who did not fear Him did?
Rashi (on Pasuk 10) and Seforno: The Torah is referring to what they did by the plague of Dever, 1 and what the Pasuk means is that following the reaction of the those who feared Him there, and that those who didn't fear Him suffered the consequences, He instructed the people now to gather in their animals and slaves now or they would suffer the same fate.
Targum Yonasan: Because those who feared Hashem refers predominantly to Iyov, and those who didn't, to Bil'am, 2 two of Pharaoh's three counselors, who played major roles in Pharaoh's treatment of Yisrael. 3
See Ba'al ha'Turim (on Pasuk 17 (Peirush Yonasan).
It is safe to assume that the Pasuk does not hint at Yisro (the third counselor), who fled (refer to Bamidbar 24:21:2:1*) and did not live in Egypt now, and therefore was not subject to the plagues.
