Prosecutor Nayyaf Yusuf announced the sentence today in connection to the attack in al-Dair, northeast of the capital, Manama.
Defense lawyer Mohammed al-Tajir told The Associated Press that King Hamad now must decide whether the death sentences should be carried out.
Al-Tajir said the two men, Hassan Mosa and Mohammed Ramadan, were among 12 charged in the case. Another defendant received a life sentence, while the rest received six-year prison sentences and fines.
The tiny Gulf island nation of Bahrain has experience continuing unrest since 2011, when its Shiite majority demanded more rights from the Sunni monarchy. Bahrain is home to the US Navy's 5th Fleet.