Contradiction with Isaiah 44:8
This verse urges being fearless, while Daniel 10:9 describes Daniel fainting in fear.
Isaiah 44:8: Fear ye not, neither be afraid: have not I told thee from that time, and have declared [it]? ye [are] even my witnesses. Is there a God beside me? yea, [there is] no God; I know not [any]. [God; I: Heb. rock, etc]
Contradiction with Philippians 4:13
This verse speaks of strength through Christ, whereas Daniel 10:9 reveals Daniel in weakness.
Philippians 4:13: I can do all things through Christ which strengtheneth me.
Contradiction with 2 Timothy 1:7
This verse refers to God giving a spirit of power and sound mind, contradicting Daniel's fear-induced fainting.
2 Timothy 1:7: For God hath not given us the spirit of fear; but of power, and of love, and of a sound mind.
Contradiction with Matthew 28:10
Here, beings from God tell people not to be afraid, yet in Daniel 10:9, the reaction to such a being is fainting in fear.
Matthew 28:10: Then said Jesus unto them, Be not afraid: go tell my brethren that they go into Galilee, and there shall they see me.
Contradiction with Joshua 1:9
This verse commands courage, which contrasts with Daniel's fearful response.
Joshua 1:9: Have not I commanded thee? Be strong and of a good courage; be not afraid, neither be thou dismayed: for the LORD thy God [is] with thee whithersoever thou goest.