The Sirmium manifesto is an Arianist text from the Council of Sirmium (357 CE). Although, Arians tried hard in their times to end Christian blasphemy of calling Jesus and Holy Spirit (Archangel Gabriel in Islamic faith) divine. They were not divine. The manifesto from the council was closer to Islam than Nicene Christianity. It was this:
"We acknowledge One God the Father, also His only Son, Jesus Christ Our Lord. But two Gods must not be preached. The Father is without beginning, invisible and in every respect greater than the Son, who is subject to Him together with the creatures. The Son is born of the Father, the God of God, by an inscrutable generation, and took flesh or body, that is man, through which he suffered. The words 'essence, of the same essence, of like essence', ought not to be used, because they are not found in the Scripture, and because the divine generation is beyond our understanding."
Arians tried to end the Nicene blashphemy. But they failed. Although their creed was also blasphemous (compared to Islamic faith) either, it was still better than Nicene trinity. A few centuries after this council in Sirmium, Allah Almighty revealed His Quran to the Last Prophet and crushed Nicene blashphemy. He says in His Book, Quran:
"Say, "He is Allah, [who is] One, Allah, the Eternal Refuge. He neither begets nor is born, nor is there to Him any equivalent." (Surah al-Ikhlas, 112:1-4)
"They have certainly disbelieved who say, " Allah is the one of three." And there is no god except one God. And if they do not desist from what they are saying, there will surely afflict the disbelievers among them a painful punishment." (Surah al-Ma'idah, 5: 73)
"The Messiah, son of Mary, was not but a messenger; [other] messengers have passed on before him. And his mother was a supporter of truth. They both used to eat food. Look how We make clear to them the signs; then look how they are deluded." (Surah al-Ma'idah, 5:75)
"And [beware the Day] when Allah will say, "O Jesus, Son of Mary, did you say to the people, 'Take me and my mother as deities besides Allah ?'" He will say, "Exalted are You! It was not for me to say that to which I have no right. If I had said it, You would have known it. You know what is within myself, and I do not know what is within Yourself. Indeed, it is You who is Knower of the unseen. I said not to them except what You commanded me - to worship Allah, my Lord and your Lord. And I was a witness over them as long as I was among them; but when You took me up, You were the Observer over them, and You are, over all things, Witness. If You should punish them - indeed they are Your servants; but if You forgive them - indeed it is You who is the Exalted in Might, the Wise. Allah will say, "This is the Day when the truthful will benefit from their truthfulness." For them are gardens [in Paradise] beneath which rivers flow, wherein they will abide forever, Allah being pleased with them, and they with Him. That is the great attainment." (Surah al-Ma'idah, 5:116-119)