After passing Part -2 of ACCA we get eligible for BSc (Applied Accounting) after submitting research thesis.
Whether we become eligible for MSc Finance as well or not ?
Could you help me in understanding the channel for MSc Finance.
Thank You.

I haven't full in depth knowledge of the case.But as your are from UAE.And we know education standards vary from country to country.So if you are interested in MSc Finance and want to get admission on basis of BSc Applied Accounting then it seems to be OK but final opinion which should carry weight will be only from the particular university you are interested in.
That particular university might be interested in credit hours you have spent on your bachelors degree.But one thing is for sure that there must be some calculations to make eligible student holding degree from Oxford Brookes University whether he even never entered United Kingdom. :)
But if you want to tak online degree then there might be nothing to worry.Because people are getting Phd degrees online.

But Fafik after choosing a full fledge field of ACCA what are the special circumstances for MSc Finance you are going for ?

You can get admission into MSc Fin, but you will have to do that externally, as ACCA does not offer such a service.