I have an example of play and not 100% sure which option is right.
Kyra encounters a demon monster with a check to defeat (combat) of 15. Her current hand is a fiery glare and a cure spell.
A. She casts fiery glare for her combat check and uses d12 + 2d4 + 2 for her divine skill.
B. She casts fiery glare for her combat check and also recharges, since its a demon, the cure spell for a total of 2d12 + 2d4 + d8 + 4.
After a discussion, we decided it was A, but there was some disagreement that it could also be B.