That is the correct spelling of "faith" (belief, confidence).
faith = fe
信念
That is the correct spelling of "religious" (having a religion or faith).
If you mean the name Faith, it's a tough one, because Russian does not have a sound or a letter for th. It would have to be Фейт, which, when read back, would sound like Fate, not Faith. Sorry! Another way to spell it is Фэйт. There is almost no difference to how a Russia would read one or the other. Pick the one that looks prettier to you.
BELIEF - something given credence or faith
faith = fe
Amuna(hebrew) Faith(english)
믿음
信念
Ha-vadk .
In Irish it's "creideamh"
je t'aime
Fides et amor.
信仰 xin yang
ne'eman, spelled × ××ž×Ÿ
It means faith. You can spell it as 'Iman' or 'Eiman'.
Vertrouwen (trust) / geloof (religion)