This message was added for Stripe SCA checkout and will only appear if the Merchant facility is Stripe SCA.
The message looks like the screenshot shown below.

The text can be found in custom labels. Navigate to:
- Setup cog (top right)
- Quick find "Custom Labels"
- Click on Menu option "Custom Labels"
- Sort by Value
- Filter by "C"
- Click into "Authorise Recurring"

The text is : “{0} selected as payment method. {2} will be prompted for after {1} button is pressed.” where:
- {0} Method of Payment Selected, e.g., Credit Card, Direct Debit, etc.
- {1} Button name
- {2} Record type of the payment
To override the text, you need to use the Translation Work Bench. See the Translation of Custom Labels guide.