Psalm 118.6
Septuagint


kurioV emoi bohqoV, 
kai ou fobhqhsomai ti poihsei moi anqrwpoV 

New Testament - Hebrews 13.6

wste qarrountaV hmaV legein: 
kurioV emoi bohqoV, 
kai ou fobhqhsomai, ti poihsei moi anqrwpoV  ;

Septuagint

The Lord is my helper; I will not fear what man shall do unto me

New Testament

So that with good courage we say, The Lord is my helper; I will not fear; What shall man do unto me?

Masoretic Text

Jehovah is on my side; I will not fear:  What can man do unto me?

Comments:  Note that the Greek is identical.  The difference in reading is due to a difference in presumed punctuation.  The MT replaces the image of the Lord as helper with the related idea that He is on the psalmist’s side.