43e0429e_testantism___Roman_Catholicism__Protestant
[Topic] Holy Spirit [Orthodox] The third person of the Trinity, proceeding from the Father alone as in the original Nicene Creed. The Father sends the Spirit at the intercession of the Son. The Son is therefore an agent only in the procession of the Spirit. [Roman Catholic] Agrees with the Protestant view. Ambrose of Milan (340-397) wrote: 'When the Holy Spirit proceeds from the Father and the Son, He is not separated from the Father, He is not separated from the Son'. [Protestant] 
The Holy Spirit proceeds from both the Father and the Son. The Nicene creed includes the filioque (Latin: 'and the son').
Comparison between Orthodoxy, Protestantism & Roman Catholicism
Protestant