(Off topic) QUEEN: Mustapha -- help?

  A friend of mine is curious as to the meaning of the non-English lyrics in
said song. I assume  it's Arabic,  at least Salaam alaikum is recognizable.
Can anyone translate (to English)??

            Ibrahim, Ibrahim, Ibrahim,
            Allah, Allah, Allah, Allah will pray for you. Hey!
            Mustapha, Mustapha, Mustapha Ibrahim.
            .....
            Allah, Allah, Allah will pray for you.
            Mustapha Ibrahim, al havra kris vanin
           .....
            Mustapha Mustapha - Allah-i na stolei
            Mustapha Mustapha - Achtar es na sholei
            Mustapha Mustapha - Mochamut dei ya low eshelei
            Mustapha Mustapha - ai ai ai ai ahelei
            Mustapha, Mustapha,
            Ist avil ahiln avil ahiln adhim Mustapha,
            Salaam Aleikum!
          .....
            Mustapha Ibrahim, achbar ish navin
           .....
            Vontap ist ahiln avil ahiln adhim Mustapha,
            Aleikum Salaam hey!

OTOH is there any evidence Freddie Mercury was a conlanger?  Thanks. Roger