For info probably the best anti-air/missile/drone ship anywhere ATM is probably one of the many Arleigh Burke Class Guided Missile destroyers operated by the US Navy.
Yes, the odd type 45 the Royal Navy might rustle up might be better in some areas but it carries considerably less by way Ordnance than an Areleigh.
There are multiple A B's in theatre right now, not two weeks sailing away.
Big unknown would be how good are they at protecting other vessels, especially if the Iranian's are firing at relatively short range.
Of course if POTUS has decided to simply blockade the straits discussing protecting anything is probably a bit moot.