You can say 'hi no megami,' written: 火の女神
Amaterasu is the Japanese sun goddess.
goddess of fire θεά της φωτιάς theá ti̱s fo̱tiás
女神 (megami)
Tsuki no megami
ai no megami
Goddess is megami, pronounced meh-gah-mee. Articles aren't really used in Japanese, so there's no need to say 'the'. If you want to say something like 'the goddess is pretty', you would say "Megami WA kirei desu."
moeteiru
meinu
Fire wolf is kaji ookami in Japanese. However, there are many words for fire in Japanese, and I am not certain if kaji is the best word to use in this context. Other words for fire in Japanese are "hi" and "ka".
hi no tora
Hi no akuma
火マスター