The phrase "cannot help but reflect" is correct and usable in written English.
It can be used when expressing an unavoidable tendency to think about or consider something.
Example: "After hearing the news, I cannot help but reflect on the impact it will have on our community."
Alternatives: "cannot avoid thinking" or "feel compelled to consider".
"I cannot help but reflect on the unfairness of the current tax regime," Mr. Ross wrote.
Yet simultaneous with a sense of biodiversity run wild, you cannot help but reflect that Tikal is also a monument to environmental ruin.
As I get ready and excited to start my new life with the Washington Nationals, I cannot help but reflect back on my time with the @dbacks.
While I grieve for the victims of the Tucson shooting, our latest public spectacle of violence, I cannot help but reflect on the fact that some victims are given more attention, more care, more sympathy than others.
I cannot help but reflect on how we finally put together a team that supports all of the company's efforts.
Looking at those half-naked, sunburned figures sweating away far below, you cannot help but reflect that they hardly conform to the popular stereotype of the scientist.
One cannot help but wonder how much of the findings reflect how subjects imagine their world, rather than how that world really is.
As I reflect on all that my homeland has endured over the past few years, I cannot help but think of Charles Dickens AA Tale of Two Cities.
As I reflect on the achievements of Ada Lovelace, credited as the first computer programmer, I cannot help but feel inspired to reach out to more women and encourage woman involvement in STEM initiatives.
As I reflect on the efforts that I have witnessed and participated in on social media, I cannot help but think of Mphunzi.
As I reflect upon the coming of Christmas and all that has led up to it, I cannot help but yearn to experience the miracle once again.
