لَوif كانَwere خَلفَكَbehind you أَوor أَمامَكَbefore you هائِباًafraid of
لَو كانَ خَلفَكَ أَو أَمامَكَ هائِباً
أَحَداًanyone سِواكُمother than you (plural) لَهابَكَwould fear you المِقدارُFate
أَحَداً سِواكُم لَهابَكَ المِقدارُ
If Fate, behind you or before you, feared
If there was anyone timid, behind or ahead of you,
anyone other than you, Fate would fear you.
Other than yourselves, destiny would have confounded you.