Rassel got into the groove straightway and never allowed the UAE batsmen to settle down restricting UAE to 171 while scripting a convincing 64-run victory.
Earlier, put in to bat by UAE, Bangladesh A amassed 235 for 9 off its allotted fifty overs. Opener Shamsu Rahman led the way for the tourists with a solid 78, which came off 122 balls, studded with six fours and a six.
Nafees Ahmad, who had opened the innings in the first one-dayer, batting down the order in this match and notch a fine half-century to provide momentum to the Bangladesh innings towards the end.
Chasing 236 for victory, UAE began their chase on a disastrous note losing openers Ali Asghar (8) and Taskeen (1) to Rassel cheaply.
One-down Naeemudin and Khuram tried hard to rebuild UAE's innings, but Saqib Hassan poured cold water to their plans dislodging Naeemudin stumped by Rahim for 13 before accounting for Syed Maqsood, to be snapped up by Riyad for 8.
Khuram Khan defied the Bangladesh for sometime but once he fell to Kazi Rajib for 58, it was case of all over bar the shouting for the hosts. Khuram's 58 came off 80 balls with five hits to the fence and two sixes.