Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
inquisition [ɪnkwɪˈzɪʃən] n сле́дствие no pl (REL)
the Inquisition Инквизи́ция
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.
Русский: