Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
fiery [ˈfaɪərɪ] adj (burning) жгу́чий#; (sunset) о́гненный; (taste) обжига́ющий; (temperament) горя́чий*горя́ч
fiery red о́гненно-кра́сный
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.