Lucifer of Cagliari was deputed by Pope Liberius, with the priest Pancratius and the deacon Hilary, to request the Emperor Constantius to convene a council, to deal with the accusations directed against St. Athanasius and his previous condemnation.
With the arrival of Eusebius the situation changed: Eusebius requested an immediate subscription of the Nicaean faith by the bishops.