Conjugal sponsorship have a very low rate of success. In the eyes of the government of Canada, if you can get married or live as common-law, then you should do one of those routes first. Now, as cohabitation is illegal in Eygpt, that will rule out common-law partner for the time being.
If there would be legitimate threats to your safety if your marriage was public, then yes, this may be considered. You will need to be prepared to show proof, however, such as laws stating the consquences. (Such as, if you married without your father's consent or laws that would require you to convert to Islam against your free will. If you do plan to convert or are considering it, then this would not apply.)
In your case, it may be best to consult with a lawyer that has experience with Conjugal sponsorship. You can communicate with a lawyer directly in Canada, instead of one in Egypt, which may be safer for you. If you do this, pretend you're broke and don't have money for a lawyer (regardless of whether or not you do). Lawyers will "exaggerate" the truth and their abilities to get cash from you, so if they think you're broke, they tend to be more honest. (You can say things like, "Well, if I can get a PR for my husband and bring him to Canada, then maybe my parents would give you the fee." The word IF when it comes to money scares lawyers.... I've had one promise me the money, took my cash, then I learned this was no legal backing for anything the lawyer told me.)
If none of the Family class will work, your boyfriend can also apply for PR on his own right in several other categories. There are many options to enter Canada from study permits, PR, and work permits. If he could enter Canada and live with you for a year under any conditions, you would be common-law.