The suffix 'tion'

[helenmeng]

Hi, when do you pronounce 'tion' as 'shun' or 'jion'?

[susiedqq]

tion is always pronounced as shun in English.

action (ac-shun)

Lotion (lo-shun)

consittution (con-sti - tu - shun)

Can you share another way to say it?

[louhevly]

tion is always pronounced as shun in English.

action (ac-shun)

Lotion (lo-shun)

consittution (con-sti - tu - shun)

Can you share another way to say it?

Yep. It's pronounced /chun/ after -s:
bastion, combustion, digestion, exhaustion, question, suggestion

Lou