Jesus prayer indicates limited atonement !
9I pray for them: I pray not for the world, but for them which thou hast given me; for they are thine.
10 And all mine are thine, and thine are mine; and I am glorified in them.
Now why did Christ refuse to pray for everyone ? Because all were not His that had been given to Him by His Father like His Sheep had been Jn 10:27-30
27My sheep hear my voice, and I know them, and they follow me:
28And I give unto them eternal life; and they shall never perish, neither shall any man pluck them out of my hand.
29 My Father, which gave them me, is greater than all; and no man is able to pluck them out of my Father's hand.
The same as in Jn 17 :2
As thou hast given him power over all flesh, that he should give eternal life to as many as thou hast given him.
Since Christ didnt pray for them, then He didnt die for them as He did His Sheep !
Exactly Brother ! From these scriptures it's obvious that the whole world of men at large had not been given to Christ of the Father, but exclusively His Vessels of Mercy [Sheep] which He had afore prepared unto Glory Rom. 9:23 for they were the objects of His Grace from Everlasting Eph. 1:4-7; 2 Tim. 1:9.
However, the vessels of wrath He prepared for destruction Rom. 9:22 Christ does not pray for, for that would be contrary to God's Purpose for them, as they were Created to be the objects of God's Divine Justice Mat. 25:41 [goats]; Prov. 16:4.