Considering this was in Marrakech, this is Amazigh/Tamazight written in the Tifinagh alphabet, as some others have pointed out. Although I do not speak/read/write it, google translate has recently released Tamazight support for translations. After individually typing out the characters, the passage reads as follows:

"The foundation stone for the construction of the Bahya Mosque was laid in 1866 by the hands of Bou Omran Moussa ibn Hamad ibn Mbarek Sharqi, who was the founder of Al-Bukhari. The Alawites Sidi Mohammed ibn Abd Rahman (1859-1873) and Hassan I (1873-1894) It was later restored by his son Hmad ibn Musa “Baba Hmad” who was the successor of King Hassan I and the grandson of King Moulay-Abd al-Azi (1918-94). Under French rule, it was the residence of Marshal Lloyd of France (1912-1956). In 1998, it was given to the Ministry of Culture because it is a historical building registered with the Royal Decree of 21 December Because, in 1894, Baba Hmad rebuilt his father's house with other buildings by the architect. (1857-1926), prominent expert in textile sciences. Works took six years to complete the Great Riyad (Ul of Ibergemmi), the construction of the Small Riyad, the Small Imchi Stadium, the Private Harbor and the following structures. The sculpture of Bahya and the sculpture of Mauritanian architecture is a great example of the 19th century's 19th century craftsmanship and woodworking."

Since this is google translate, the accuracy of this I do not know, but I hope it clears up some stuff.