Hello,
Going by the facts of your case, your presumptions w.r t taxability of your foreign sources income are incorrect.
First, you will be incorporating a company in UAE which will be operated here from India. Therefore this company may be considered as resident in India on account of POEM rules if its turnover exceeds the threshold of INR 50 crores.
Second, being an Indian resident, when you are holding shares/ beneficial interest in a foreign company, you will be required to disclose the same in your IT returns.
Third, in case you try to remmit it back to India in form of dividend or so it will be considered a seperate transaction and taxed accordingly for which you may need to resort to beneficial provisions of DTAA between two countries.
Given the multiple aspects of this query, it is advisable to get a telephonic consultation where you can share further facts regarding your query fro detailed discussion and precise advisory.
Best Regards,