Cap. IX vocatione Sol cont.: reprobates may be commanded to believe and offered salvation if they believe — as non-elect angels were commanded to obey
As for the reprobate: eternal antecedent reprobation notwithstanding, they can as truly be commanded to believe as the those not chosen or reprobate angels could be commanded to obey God; salvation hem on the condition If they believe as beatitude could be promised those angels on If they had persevered in God's obedience. Peter's predestination does not cancel the truth of If you do not believe, you will not be saved; Judas's reprobation does not weaken If you believe, you will be saved. It only implies that, that indissoluble faith-salvation bond standing, Judas is not to be given the efficacious grace by which he would in fact fulfill the condition.
Latin
Jam quod attinet ad reprobatos, non obstante aeterna antecedanea reprobatione, tam potest iis mandari ut credant, quam potuit vere mandari Angelis non-electis sive reprobatis ut obediant Deo: tam potest iis offerri salus sub conditione, Si credant, quam potuit his promitti beatitudo sub conditione, Si in obsequio Dei perseverassent. Nam ut praedestinatio Petri non tollit veritatem hujus negativae conditionalis, Si non credideris, non salvaberis: ita reprobatio Judae non enervat veritatem hujus affirmativae conditionalis, Si tu credideris, tu salvaberis: sed infert solummodo, stante indissolubili illa conditionali fidei et salutis concatenatione, non dandam eam efficacem gratiam Judae, qua de facto conditionem impleat.