Trophy will stop any missile coming at it. Unless it is jammed than it can do nothing.
Not if you over whelm it:
Dehlavieh is being used on different platforms, when used on AFVs, Iran can arm the AFV with an auto cannon with a range matching that of Dahlavieh's. This auto cannon (35mm Oerlikon or 40mm Bofors) can cleanup all electronic and visual surveillance equipments on the tank including the IR sensors, periscopes, cameras, radar...etc, thus making the tank virtually blind. Not to mention the 35 or 40mm rounds alone can overwhelm the Trophy's radar before destroying it.
Where the auto canon can't be used, such as light vehicles or infantry, a cheaper rocket could be used as precursor to activate the Trophy milliseconds before Dehlavieh entered Trophy's effective range, thus leaving no time for Trophy to reset itself after shooting at precursor rocket.
A Hydra 70mm rocket is best candidate platform for this concept. Iran can make a laser guided version of it with speed and flight characteristics that match those of Dehlavieh's. On the Safir type vehicles dehlavieh launcher could be coupled with the launcher of this guided precursor and synchronized the way that after the gunner pulls Dehlaviah's trigger, the 70mm precursor launches milliseconds before Dehlavieh, and therefore opening a window of opportunity for Dehlavieh to hit the tank before the Trophy reset itself from it's first interception.
Similar arrangement can be used by foot soldiers but with each launcher (Dehlavieh and precursor) carried separately for ease of transportation on foot.
Another benefit of having a guided precursor is that you can preserve the precious Dehlavieh for difficult MBTs like the M-1 and Leopard and using the cheaper 70mm missile on softer targets such as APC's, trucks or low flying helicopters.