This can be expressed with the verb "disgrace." AT: "stops Israel from being disgraced" or "stops him from disgracing Israel" (See: [[rc://en/ta/man/translate/figs-abstractnouns]])
David said this to show his anger that this Philistine was defying God's army. AT: "This uncircumcised Philistine certainly has no power that he should defy the armies of the living God!" (See: [[rc://en/ta/man/translate/figs-rquestion]])