The Injeel

The Injeel is the book of Allah revealed to Prophet Eesa (Jesus, peace be upon him). Injeel means evangelion, or Gospel Book. It is often just translated as The Gospel.
Like the Tawrat, many people make the mistake of stating the Injeel is the New Testament of the Bible. But that is far from the truth.
The New Testament consists of written work attributed to some of Jesus’ disciples. And a good portion of the New Testament was written by Paul, who was not a disciple at all.
Most modern scholars have concluded it is highly unlikely that Jesus’ actual disciples wrote any part of the New Testament. Even if they had written it (which they did not) They were not the prophets of Allah.
While there may be some truth in the writings popularly known as the Gospels of Mark, Luke, John, and Matt, Muslims are not obliged to follow or even read them.
The only Gospel we are concerned with, is the Gospel of Jesus. But like many other Books of Allah, the actual text is no longer available.
And like all of the other Books of Allah, the message of the Injeel is preserved in the message of the Quran.

http://islamiclearningmaterials.com/books-of-allah/