Does the Elemental Adept (fire) feat apply to the Flame Strike spell’s radiant damage?

I noticed that the Elemental Adept feat states (emphasis mine):

[…] when you roll damage for a spell you cast that deals damage of that type, you can treat any 1 on a damage die as a 2. […]

Does this mean the feat applies to spells like flame strike which deal 4d6 fire damage and 4d6 radiant damage?

In other words, would taking Elemental Adept (fire), casting flame strike, and rolling a 1 on a radiant damage die allow me to treat that 1 as a 2 even though its damage type does not match the damage type I chose with Elemental Adept?