Fallacious comparison, two entirely different situations. For a start, whatever the Iranian response, the aggressor at the root of this particular episode is the other side: the U.S.
Pascal's wager, as it relates to faith, is based on the premise that there is a lot to win in making the wager --but little to lose. In turn, that second part is grounded in the assumption (right or wrong, I won't judge) that living according to Christian principles brings benefits _in this life also_ to the individual who so chooses.
So it seems a mischaracterization to present the essence of the wager as going out of your way to perform random and costly rites in the hope of lifting any ill omen.