The scripture below was instruction for a king in Israel. Obviously the prime minister is not a king, but the instruction is good advice for any head of state.
Deuteronomy 17:19-20 (ESV)
And it shall be with him, and he shall read in it all the days of his life, that he may learn to fear the Lord his God by keeping all the words of this law and these statutes, and doing them, that his heart may not be lifted up above his brothers, and that he may not turn aside from the commandment, either to the right hand or to the left, so that he may continue long in his kingdom, he and his children, in Israel.
Dear Heavenly Father,
These are perilous times, and we ask for wisdom for Prime Minister Netanyahu. Stir his spirit to read Holy Scripture all the days of his life. Amen.