2NT. Partner is showing a limit raise or better in diamonds (this is not a so-called "Western cuebid."). A Western cuebid is only on the three level (and never a jump; so if partner had bid 3, that would have been a splinter bid).
Anyway, with 2 spade stoppers, it seems right to bid notrump. You aren't promising stoppers in clubs or hearts. With a stronger hand, you could jump to 3NT. Your 2NT call is NF and if partner goes to 3, you will pass that.
Partner raises to 3NT. The 9 is led (East playing the 10). Your plan?
Choose One:
Let the 10 win the trick.
Win the Q and play hearts.
Win the Q and play diamonds.
Win the Q and play clubs.
Win the A.
Answer: 1 -
Let the 10 win the trick.
After you knock out the A, you will have 8 sure tricks (2 spades, 1 club and 5 diamonds). You will still need to also knock out the A (or take a club finesse). If you win the first spade and play a red suit and West happens to win, he will have another spade to play. Now you will be in bad shape.
Better is to let East win the first trick. He can play another spade which you will win with the Q, Now you knock out the A. If East has it, he will clear spades and you will later have to guess what to do. But if West has it (as shown below), he will be out of spades. If he plays a club, he can't hurt you (you can cover whatever he plays, or win the A and knock out the A).
AQ2 
75 
KQJ1063 
43.
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