nisi quod

Meaning

1. except that
   Nec Vettius Bolanus, manentibus adhuc civilibus bellis, agitavit Britannian disciplina: eadem inertia erga hostis, similis petulantia castrorum, nisi quod innocens Bolanus et nullis delictis invisus caritatem paraverat loco auctoritatis.Nor did Vettius Bolanus, with the civil wars still on-going, trouble Britain with discipline: there was the same inactivity towards foes, the same insolence of the camps, except that Bolanus (unblemished in reputation and hated for no offense) furnished kindness in the place of authority.Tactitus, Agricola, page 16.23