A more literal Latinization of the phrase; the most common translation is fiat lux, from Latin Vulgate Bible phrase chosen for the Genesis line "וַיֹּאמֶר אֱלֹהִים, יְהִי אוֹר; וַיְהִי-אוֹר" (And God said: 'Let there be light.' And there was light). Motto of the University of Washington.
A much more detailed analysis with detection of relationships or clauses can be found in our Sentence Analysis! Try it out!