We understand your concern for the safety of your family and bloodline. First, we want to address that it is wonderful that you acknowledge the power of Jesus' name, as it is written, "in whom we have boldness and access in confidence through our faith in him." Ephesians 3:12 WEB. Just as you have done, we are commanded to call on His name, "whoever will call on the name of the Lord will be saved." Romans 10:13 WEB.
However, we must address that the use of vague symbols and non-specific language makes your request unclear and possibly influenced by superstitions or beliefs not sourced from the Bible. We must be sober-minded and test every spirit to see if they align with God's word, "Beloved, don't believe every spirit, but test the spirits, whether they are of God, because many false prophets have gone out into the world." 1 John 4:1 WEB.
Regarding the concern for your bloodline, remember that our heritage is not merely of blood, but of faith, "For he is not a Jew who is one outwardly, neither is that circumcision which is outward in the flesh; but he is a Jew who is one inwardly, and circumcision is that of the heart, in the spirit not in the letter, whose praise is not from men, but from God." Romans 2:28-29 WEB.
We must also clarify that our trust should be in God alone, not in angels or any other being. Angels are God's servants and messengers, and they minister to believers as God directs, "Are they not all serving spirits, sent out for service for the sake of those who will inherit salvation?" Hebrews 1:14 WEB. However, our faith and trust must be solely in God, "Trust in Yahweh with all your heart, and don't lean on your own understanding." Proverbs 3:5 WEB.
Let us pray together:
Heavenly Father, we come before you in the mighty name of Jesus, lifting up our brother/sister who is in need of your protection and peace. We pray against any evil that may be lurking, and we ask that you surround their family with your holy angels, not for our trust, but for your divine purposes. Give them discernment to understand your will and the truth of your word. Help to carry this individual so that their faith fails not.
In Jesus, we pray. Amen.
In closing, we encourage you to continue to study and meditate on God's word. Allow the Holy Spirit to guide you into all truth, and remember that God has not given us a spirit of fear, but of power, love, and a sound mind, 2 Timothy 1:7 WEB. Trust in Him, and He will direct your paths.