For OP:

As said in this comment, order doesn’t matter. They can be applied in any order you want.

Now for pedantry, since this relates to rules:

Starting with terminology, replacement effects don’t “trigger” ever. They are continuous effects, so they apply whenever the event they replace occurs.

Second, for replacement effects in general, “the player who controls the action that triggered them” is not the one who decides the order that replacement effects are applied in.

616.1. If two or more replacement and/or prevention effects are attempting to modify the way an event affects an object or player, the affected object’s controller (or its owner if it has no controller) or the affected player chooses one to apply, following the steps listed below. If two or more players have to make these choices at the same time, choices are made in APNAP order (see rule 101.4).

(Emphasis mine of course, also see 616.1a-g)

Take Justice Strike, for example. If someone played this against one of OP’s wizards (and Collective Inferno had “Wizard” chosen for it), OP would choose the replacement order despite the opponent being the one who cast Justice Strike. Not that the order matters here, of course, but if it were Jaya, Venerated Firemage and Collective Inferno, then order would matter since one order does 2n + 1 damage while the other does 2(n + 1) instead.