The answer depends on the genders of the gods.
Latin has three grammatical genders — masculine, feminine, and neuter — and some words have different forms for different genders.
If the group of gods is all male or a mixed group of men and women, then you need the masculine form deorum.
If the group of gods is all female (goddesses rather than gods if you will), then you need the feminine form dearum.
There are several possible words for a god(dess), including deus/dea, divus/diva, numen, caeles, caelestis.
To get an idea of their differences and nuances, I recommend taking a look at any of the many online Latin dictionaries and asking a question on this site if more clarification is needed.
The most standard choice would indeed be deus/dea (whose plural genitives I gave above), but depending on context you might want something else.