French phrase
Je vous suggère de ~.
Meaning
I suggest that you ___.
When to use it
A polite way to offer advice or a proposal. It is formal and non-pressuring, often used in important situations.
Example dialogue
Je dois rester plus longtemps que prévu.
I have to stay longer than expected.
Je vous suggère de faire une demande de prolongation de visa dès que possible.
I suggest that you apply for a visa extension as soon as possible.