رَبَّنَا لَا تَجْعَلْنَا فِتْنَةً لِّلَّذِينَ كَفَرُوا وَاغْفِرْ لَنَا رَبَّنَا إِنَّكَ أَنتَ الْعَزِيزُ الْحَكِيمُ

Rabbana la taj'alna fitnatal lilladhina kafaru waghfir lana Rabbana innaka antal 'Azizul-Hakim

Word By Word:

Rabbana: Our Lord

la: not

taj'alna: make us

fitnatal: a trail

lilladhina:  for those who

kafaru: disbelieve

waghfir: and forgive

lana: us

Rabbana: Our Lord

innaka:  Indeed YOU

anta:  are 

Al Aziz: The All Mighty

Al Hakim: The All Wise

Translation: Our Lord! Make us not a (test and) trial for the Unbelievers, but forgive us, our Lord! for Thou art the Exalted in Might, the Wise [60:5]

Tafseer:  Here the prayer to Allah is that we should be saved from becoming so weak as to tempt the Unbelievers to try to attack and destroy us.