More formal:
* "Thank you, Lord, for the safe journey."
* "Thank you, Lord, for keeping me safe during my travels."
More informal:
* "Thanks, Lord, for a safe trip."
* "Lord, I'm grateful for safe travels."
Tips for better grammar:
* Use proper capitalization for "Lord".
* Consider using "journey" or "trip" instead of "travel" for a more specific meaning.
* Add a comma after "Lord" for better flow.
Ultimately, the best way to phrase your thanks depends on your personal preference and the context.