Blazing Guard

Wreathing yourself with a Red Energy , you gain 1d6 temporary hit points for the duration.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, you gain 5 additional temporary hit points for each slot level above 1st.

Cast with Red Sun. When cast as a by-product of Red Sun, only 1d4 of temporary hits points are gained. However there are no limits on the number of Blazing Guard instances applied.