Answering who are trying to disprove Jesus divinity using John 17:3
Using John 17:3
And this is life eternal, that they might know you the only true God, and Jesus Christ, whom you have sent.
Muslims tries to disprove Jesus divinity claiming that Jesus admitted God to be the only true God alone and not himself, but is that true?
First: No one in the whole prophets in OT to associate himself to God
In The same verse John 17:3 we find Jesus dared to associate himself to God by saying “and Jesus Christ, whom you have sent” that is why it is a clear misquote on the Muslim side, please also refer to Isaiah 37:16 and Daniel 3:45
Second: The whole Chapter of John 17 is about Jesus divinity
And this shows how is the claim to disprove Jesus divinity is out of context meanwhile the whole chapter shows Jesus divinity for example:
These words spoke Jesus, and lifted up his eyes to heaven, and said, Father, the hour has come; glorify your Son, that your Son also may glorify you
Jesus is asking his father to glorify the Son (Jesus)
As you have given him power over all flesh, that he should give eternal life to as many as you have given him.
Can a prophet or even an archangel say that he has power over all flesh to give eternal life?
And now, O Father, glorify me with your own self with the glory which I had with you before the world was.
So Jesus is eternal and since ever he shares the glory with the father!
And also John 17:10 whatever the Father has the Son has too
Third: Jesus is one with the Father
So clearly Jesus meant to deny any other God from other nations as they are all pagan Gods, as Jesus stated clearly in John 10:30 that he is one with the Father
Forth: Each OKNOM in the Trinity is the one true God
For example as John said in his first message Jesus Christ is one true God in
1 John 5:20
And we know that the Son of God is come, and has given us an understanding, that we may know him that is true, and we are in him that is true, even in his Son Jesus Christ. This is the true God, and eternal life.
For More about Jesus divinity we recommend this PDF book
Putting Jesus in His Place
Also read how The Quran didn’t deny that Christ the Lord was not ashamed to come as a servant