Native speaker
In Emirati Arabic, “I don't understand” is ما أفهم (maa afham).
ما أفهم
I don't understand.
It's in the phrasebook under When you don't understand, with 6 more like it.
to a man
to a man
to a man
to a man
to a man
Source: DLIFLC Emirati Basic Language Survival Kit (2007). Credits and licences