Saba 34:20

Walaqad saddaqa AAalayhim ibleesu thannahufattabaAAoohu illa fareeqan mina almu/mineen

And Iblees had already confirmed through them his assumption, so they followed him, except for a party of believers.

Iblīs (Satan)has found his assessment true about them. So they followed him, except a group of the believers.