In the Gospels, God states He is part of the Holy Trinity (pause for GLP Trinity jokes) and that Jesus is the Son of the Father. Followers of the excommunicated priest, Martin Luther broke away from the Church due to abuses. Numerous Christian Protestant denominations proliferated ever since, though most all still accept that God the Father, the Son, and Holy Ghost (or Spirit) comprise one, Triune God.

In the Koran, Allah states He is not a part of a Trinity and curses those who believe Jesus is the Son of God.

Interfaith dialogue notwithstanding, does that sound like Islam and Catholicism agree theologically to you?