its not possible.u have to cancel your uae resident visa.otherwise from qatar airport ,they will send send back uae to cancel visa. 4 you now easy to cancel uae visa.because you are under probation,u can leave job as soon as posible. only one day need notice period.its same think happened me also.(easy to get 2 or 3 gcc country visa same time. but only one country valid work permit you can paste on your passport