Invincible means too powerful to be defeated and its another usage is invincible faith or attitude which cannot be changed. I am a bit confused with the usage in the second form. I have written a few sentences and want to ensure that i am using it correctly.
I have invincible trust in god and miracles.
Indian team has invincible faith on the current form of Virat Kohli and MS Dhoni which will certainly help them in the World Cup 2019.
Invincible faith in these so called gurus can be dangerous for society.
I have tried to use it in kind a sense of unshakable trust and unshakable faith.